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1. Longitudinal Associations between Attachment and Forgivingness within Romantic Relationships

Author

Dewitte, Laura, Martin, Annika, Allemand, Mathias, and Hill, Patrick L.

Abstract

Being securely attached and willing to forgive your partner tends to promote greater relationship success. Though attachment and partner forgiveness are associated cross-sectionally, research has yet to investigate whether and how these positive relationship factors tend to codevelop over time. The current study examined cross-lagged effects and correlated changes in partner forgivingness and attachment across a 2-year period with two measurement occasions (n = 514 individuals). Additionally, dyadic analyses were conducted with a subsample of dyads in the study (n = 149 dyads). Individual level analyses evidenced negative cross-sectional and longitudinal associations between attachment-anxiety and forgivingness. Attachment-avoidance and forgivingness showed significant correlated changes over time. Dyadic level analyses showed that attachment-avoidance predicted partner forgivingness 2 years later but not vice versa. Findings suggest that longitudinal associations between attachment and forgivingness may take different forms at the individual and dyadic level.

Published
2021
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8. The outcomes of healthcare chaplaincy on hospitalized patients. A quasi-experimental study in Belgium.

Author

Buelens, Eva, Dewitte, Laura, Dezutter, Jessie, Vandenhoeck, Anna, and Dillen, Annemie

Subjects
*PREVENTION of mental depression, *RESEARCH funding, *ACADEMIC medical centers, *HOSPITAL care, *CLINICAL trials, *TREATMENT effectiveness, *PRE-tests & post-tests, *LONGITUDINAL method, *CONTROL groups, *RESEARCH methodology, *COMPARATIVE studies, *HOSPITAL chaplains, ANXIETY prevention
Abstract

Research on the effects of chaplaincy care is scarce and hampered by methodological limitations. Our quasi-experimental study (n = 256 at baseline) aimed to gain insight into the immediate and intermediate impact of chaplaincy care on inpatients' existential anxiety, peace, anxiety and depressive symptoms. Multilevel modeling was used to analyze the data. After controlling for age, gender, education, (non)religion/(non)belief and religiosity, participants receiving chaplaincy care demonstrated greater immediate improvement in peace compared to the control group at posttest. This was not found for anxiety, depressive symptoms or existential anxiety, nor for any of the outcomes at the three-week follow-up assessment. [ABSTRACT FROM AUTHOR]

Published
2024
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16. Experiment

Author

steegen, sara, vanpaemel, wolf, tuerlinckx, francis, and Dewitte, Laura

Published
2022
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18. Data

Author

steegen, sara, vanpaemel, wolf, tuerlinckx, francis, and Dewitte, Laura

Published
2022
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23. Manuscript

Author

steegen, sara, vanpaemel, wolf, tuerlinckx, francis, and Dewitte, Laura

Published
2022
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25. TiMe-project

Author

Golovchanova, Nadezhda, Dezutter, Jessie, Dewitte, Laura, and Thauvoye, Evalyne

Abstract

Mixed method cross-sectional project focusing on meaning in life, future time perspective, and possible correlates

Published
2022
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26. the crowd within: a pre-registered replication

Author

steegen, sara, vanpaemel, wolf, tuerlinckx, francis, and Dewitte, Laura

Abstract

the goal is to try to replicate the crowd within effect (Vul & Pashler, 2008), in both the immediate and delayed condition with a high powered, pre-registered study.

Published
2022
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29. Replication of Vul & Pashler (Psych Science, 2008)

Author

steegen, sara, vanpaemel, wolf, tuerlinckx, francis, and Dewitte, Laura

Abstract

High powered, pre-registered replication study of the crowd within effect (Vul & Pashler, 2008), reported in Steegen, S., Dewitte, L., Tuerlinckx, F., & Vanpaemel, W. (2014). Measuring the crowd within again: a pre-registered replication study. Frontiers in Psychology, 5, 786.

Published
2022
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30. Reproducibility Project: Psychology

Author

Anderson, Christopher, Anderson, Joanna, van Assen, Marcel, Attridge, Peter, Attwood, Angela, Axt, Jordan, Babel, Molly, Bahník, Štěpán, Baranski, Erica, Barnett-Cowan, Michael, Bartmess, Elizabeth, Beer, Jennifer, Bell, Raoul, Bentley, Heather, van den Bergh, Don, Beyan, Leah, den Bezemer, Bobby, Borsboom, Denny, Bosch, Annick, Bosco, Frank, Bowman, Sara, Brandt, Mark, Braswell, Erin, Brohmer, Hilmar, Brown, Benjamin, Brown, Kristina, Brüning, Jovita, Calhoun-Sauls, Ann, Callahan, Shannon, Chagnon, Elizabeth, Chandler, Jesse, Chartier, Christopher, Cheung, Felix, Chu, Phuonguyen, Cillessen, Linda, Clay, Russ, Cleary, Hayley, Cloud, Mark, Cohn, Michael, Cohoon, Johanna, Columbus, Simon, Costantini, Giulio, Cramblet Alvarez, Leslie, Cremata, Edward, Crusius, Jan, DeCoster, Jamie, DeGaetano, Michelle, Della Penna, Nicolás, Deserno, Marie, Devitt, Olivia, Dewitte, Laura, DiGiacomo, Philip, Dobolyi, David, Dodson, Geneva, Donnellan, Brent, Donohue, Ryan, van Dooren, Roel, van Doorn, Johnny, Dore, Rebecca, Dorrough, Angela, Dorsthorst, Anniek, Dreber, Anna, Dugas, Michelle, Dunn, Elizabeth, Easey, Kayleigh, Eboigbe, Sylvia, Eggleston, Casey, Embley, Jo, Epskamp, Sacha, Errington, Timothy, Estel, Vivien, Farach, Frank, Feather, Jenelle, Fedor, Anna, Fernández, Belén, Fiedler, Susann, Field, James, Fitneva, Stanka, Flagan, Taru, Forest, Amanda, Forsell, Eskil, Foster, Joshua, Frank, Michael, Frazier, Rebecca, Fuchs, Heather, Gable, Philip, Galak, Jeff, Galliani, Elisa, Gampa, Anup, Garcia, Sara, Gazarian, Douglas, Gilbert, Elizabeth, Giner-Sorolla, Roger, Glöckner, Andreas, Goellner, Lars, Goh, Jin, Goldberg, Rebecca, Goldinger, Stephen, Goodbourn, Patrick, Gordon-McKeon, Shauna, Gorges, Bryan, Gorges, Jessie, Goss, Justin, Graham, Jesse, Gray, Jeremy, Hartgerink, Chris, Hasselman, Fred, Hayes, Timothy, Heikensten, Emma, Henninger, Felix, Hicks, Grace, Hodsoll, John, Holubar, Taylor, Hoogendoorn, Geertje, van der Hulst, Marije, Humphries, Denise, Hung, Cathy, Immelman, Nathali, Irsik, Vanessa, Jahn, Georg, Jäkel, Frank, Jekel, Marc, Johannesson, Magnus, Johnson, David, Johnson-Grey, Kate, Johnson, Larissa, Johnston, William, Jonas, Kai, Joy-Gaba, Jennifer, Kappes, Heather, Kelso, Kim, Kidwell, Mallory, Kim, Seung, Kirkhart, Matthew, Kleinberg, Bennett, Knezevic, Goran, Kolorz, Franziska, Krause, Robert, Krijnen, Job, Kuhlmann, Tim, Kunkels, Yoram, Kyc, Megan, Lai, Calvin, Laique, Aamir, Lakens, Daniel, Lane, Kristin, Lassetter, Bethany, Lazarevic, Ljiljana, LeBel, Etienne, Lee, Key Jung, Lee, Minha, Lemm, Kristi, Levitan, Carmel, Lewis, Melissa, Lin, Lin, Lin, Stephanie, Lippold, Matthias, Loureiro, Darren, Lumian, Daniel, Luteijn, Ilse, Mackinnon, Sean, Mainard, Heather, Marigold, Denise, Martin, Daniel, Martinez, Tylar, Masicampo, E.J., Matacotta, Joshua, Mathur, Maya, May, Michael, McRae, Kateri, McElroy, Todd, Mechin, Nicole, Mehta, Pranjal, Meixner, Johannes, Melinger, Alissa, Miller, Jeremy, Smith, Mallorie, Moore, Katherine, Möschl, Marcus, Motyl, Matt, Müller, Stephanie, Munafo, Marcus, Muñoz, Alisa, Neijenhuijs, Koen, Nervi, Taylor, Nicolas, Gandalf, Nilsonne, Gustav, Nosek, Brian, Olsson, Catherine, Osborne, Colleen, Ostkamp, Lutz, Pavel, Misha, Perna, Olivia, Pernet, Cyril, Perugini, Marco, Pipitone, R. Nathan, Pitts, Michael, Plessow, Franziska, Prenoveau, Jason, Ratliff, Kate, Reinhard, David, Renkewitz, Frank, van Renswoude, Daan, Ricker, Ashley, Rigney, Anastasia, van Rijn, Hedderik, Rivers, Andrew, Roebke, Mark, Rutchick, Abraham, Ryan, Robert, Sahin, Onur, Saide, Anondah, Sandstrom, Gillian, Santos, David, Saxe, Rebecca, Schlegelmilch, René, Schmidt, Kathleen, Scholz, Sabine, Seibel, Larissa, Selterman, Dylan, Shaki, Samuel, Simpson, William, Sinclair, H., Skorinko, Jeanine, Slowik, Agnieszka, Snyder, Joel, Soderberg, Courtney, Sonnleitner, Carina, Spencer, Nicholas, Spies, Jeffrey, Staples, Angela, steegen, sara, Steinberg, Mia, Stieger, Stefan, Strohminger, Nina, Sullivan, Gavin, Talhelm, Thomas, Tapia, Megan, Thomae, Manuela, Toton, Sarah, Tibboel, Helen, Tio, Pia, Traets, Frits, Tsang, Steve, tuerlinckx, francis, Tullett, Alexa, Turchan, Paul, vanpaemel, wolf, Vásquez-Echeverría, Alejandro, van 't Veer, Anna, Vélez, Natalia, van de Ven, Mathijs, Vermue, Marieke, Verschoor, Mark, Vianello, Michelangelo, Voracek, Martin, Vuu, Gina, Wagenmakers, Eric-Jan, Weerdmeester, Johanna, Welsh, Ashlee, Westgate, Erin, Wissink, Joeri, Wood, Michael, Andy, Wright, Emily, Wu, Sining, Zeelenberg, Marcel, Zuni, Kellylynn, Hartshorne, Joshua, and Grange, James

Subjects
reproduction, metascience, replication, psychological science, open science, psychology, crowdsource, reproducibility
Abstract

Reproducibility is a defining feature of science, but the extent to which it characterizes current research is unknown. We conducted replications of 100 experimental and correlational studies published in three psychology journals using high-powered designs and original materials when available.

Published
2022
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37. The mediating role of meaning in life between the therapeutic relationship and therapy outcome in person-centered and experiential psychotherapies.

Author

Fortems, Charlotte, Dezutter, Jessie, Dewitte, Laura, and Vanhooren, Siebrecht

Subjects
PATIENT-professional relations, PSYCHOTHERAPY, THERAPEUTIC alliance, MULTILEVEL models, LONGITUDINAL method
Abstract

Copyright of Person-Centered & Experiential Psychotherapies is the property of Routledge and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2022
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38. Meaning Through Attachment : An Integrative Framework

Author

Dewitte, Laura, Granqvist, Pehr, Dezutter, Jessie, Dewitte, Laura, Granqvist, Pehr, and Dezutter, Jessie

Abstract

We propose an integrative framework, advancing attachment as a vital factor in the development and maintenance of meaning throughout life. First, early attachment experiences provide a foundation for recognizing patterns and acquiring a sense of order and coherence. Furthermore, interactions with sensitive attachment figures stimulate mentalization capacities and exploration of the inner and outer environment, enabling the formation of complex representations of self, others, and the world, ultimately also molding how individuals appraise meaning in their lives. Second, attachment security can serve as an enduring and powerful resource for handling threats to meaning. When confronted with disruptions to meaning, secure attachment provides a coherent set of representations to fall back on and maintain or regain a firm sense of order and meaning under challenging circumstances. Moreover, by promoting cognitive openness and tolerance of ambiguity, secure attachment facilitates flexible and realistic adjustment of meaning representations when encountering discrepant information., This work was supported by the Research Foundation Flanders (1109417N) and the John Templeton Foundation (grant no. 51897).

Published
2019
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39. Cross-lagged relationships between sense of purpose in life, memory performance, and subjective memory beliefs in adulthood over a 9-year interval.

Author

Dewitte, Laura, Lewis, Nathan A., Payne, Brennan R., Turiano, Nicholas A., and Hill, Patrick L.

Subjects
MEMORY, WELL-being, RESEARCH, CONFOUNDING variables, AFFECT (Psychology), TIME, AGE distribution, SELF-evaluation, CROSS-sectional method, INDEPENDENT variables, FUNCTIONAL status, COGNITION, ACTIVITIES of daily living, HEALTH outcome assessment, TASK performance, LIFE, MEMORY disorders in old age, MATHEMATICAL variables, SEX distribution, DESCRIPTIVE statistics, STATISTICAL correlation, CAUSALITY (Physics), EDUCATIONAL attainment, LONGITUDINAL method, CAUSAL models, OLD age, ADULTS
Abstract

Previous studies have found a positive association between having a sense of purpose in life and memory functioning in old age. We extend these findings by examining the relationships between sense of purpose, memory performance, and subjective memory beliefs over time in a large sample of adults in mid to later adulthood. We used data from 3633 participants of the second and third wave of the MIDUS study. Cross-lagged panel analysis investigated the relationships between the variables at the two points, which were approximately 9 years apart, while controlling for gender, age, education, positive and negative affect, and self-rated health. Sense of purpose in life, memory performance, and subjective memory beliefs were all cross-sectionally related to each other at both times. Longitudinally, sense of purpose was a positive predictor of subjective memory beliefs. Memory performance and subjective memory beliefs positively predicted each other over time. Furthermore, all three variables showed correlated changes over time. Exploratory analyses suggest that the covariates of affect and self-rated health are possible mediators or confounders in respectively the relationship between subjective memory beliefs and later sense of purpose, and sense of purpose and later objective memory performance. Our findings underscore once more the relevance of sense of purpose in life as a predictor of positive late life functioning, as it is related to both performance-based and subjective cognitive outcomes. More work is needed to understand mechanisms underlying the purpose-memory association in order to develop and implement purpose interventions. [ABSTRACT FROM AUTHOR]

Published
2021
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40. Continuing to Participate in the Dance of Life as Oneself: The Lived Experience of Meaning in Life for Older Adults With Alzheimer's Disease.

Author

Dewitte, Laura, Wijngaarden, Els van, Schellekens, Tine, Vandenbulcke, Mathieu, and Dezutter, Jessie

Subjects
*WELL-being, *ALZHEIMER'S disease, *PATIENT participation, *ATTITUDES toward aging, *INTERVIEWING, *LIFE, *EXPERIENCE, *PHENOMENOLOGY, *NURSING care facilities, *DANCE, *DATA analysis, *PSYCHOLOGICAL adaptation, *REFLECTION (Philosophy)
Abstract

Background and Objectives Meaning in life is an important aspect of positive psychological functioning for older adults. Limited work suggests the relevance of the experience of meaning for people with dementia, but research into this experience from their personal perspective is lacking. The current study provides an in-depth investigation of the lived experience of meaning in life for older adults with Alzheimer's disease. Research Design and Methods The study was conducted following the phenomenological reflective lifeworld approach. In-depth interviews were conducted with 16 older adults (+65) with Alzheimer's disease living either at home or in a nursing home in Belgium. Data analysis was an iterative process aimed at illuminating the constituents and essence of the phenomenon. Results The essence of the experience of meaning in life for participants was understood as "continuing to participate in the dance of life as oneself." This experience was further clarified in four closely intertwined constituents: (a) feeling connected and involved, (b) continuing everyday life as oneself, (c) calmly surrendering and letting go, and (d) desiring freedom, growth, and invigoration. Discussion and Implications Our findings contribute to a deeper understanding of meaning in life as experienced by older adults with Alzheimer's disease themselves. They emphasize the relevance of the concept for psychological dementia research and offer original insight for the inclusion of meaning in life as an important aspect of holistic dementia care. [ABSTRACT FROM AUTHOR]

Published
2021
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44. A Lay Definition of Grace: A Quantitative and Qualitative Content Analysis.

Author

Schellekens, Tine, Dillen, Annemie, Dewitte, Laura, and Dezutter, Jessie

Subjects
CONTENT analysis, PSYCHOLOGISTS, ADULTS, GENDER, DEFINITIONS
Abstract

Grace is a central theme in religious traditions but receives only recently attention by psychologists. Conceptualizations of grace seem predominantly constructed within theological and theoretical frameworks, whereas these conceptualizations may be poorly aligned with the definitions of grace of lay persons. This study clarifies the concept of grace and creates a bottom-up definition, based on the understanding of non-experts in a secularized society. A total of 456 Belgian adults (64% female, mean age = 50.04) provided descriptions of grace in an online survey. A multidisciplinary coding team conducted quantitative and qualitative content analysis (Nvivo). The following themes and categories emerged (1) virtuous qualities: grace is recognized in a multitude of good qualities with forgiveness as the ultimate example; (2) extra-ordinary gift: grace is something you receive unmerited, the nature of the giving goes beyond mere fair exchange; (3) transcendent and immanent setting: grace is encountered in the realm of the divine as well as in human relationships and daily life; (4) profound experience: the giving and receiving of grace entails an articulated personal involvement leading to new beginnings and freedom and (5) profound feelings: the experience of grace is accompanied with positive feelings and states often preceded by negative feelings and states. Distribution of categories by respondent's age, gender, and religiosity showed robustness of underlying characteristics in the definition of grace. However, significant group differences are found: believing and older participants described more often extra-ordinary and transcendent characteristics, whereas nonbelievers used more referrals to faults and forgiveness. Believing people used more positive feelings and women used more virtuous qualities in describing grace. The importance of further investigating the psychological dynamics of grace and its capacity for enhancing well-being is highlighted. [ABSTRACT FROM AUTHOR]

Published
2021
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45. Sources of well-being for older adults with and without dementia in residential care: relations to presence of meaning and life satisfaction.

Author

Dewitte, Laura, Vandenbulcke, Mathieu, Schellekens, Tine, and Dezutter, Jessie

Subjects
DEMENTIA, ALZHEIMER'S disease, DEMENTIA patients, INTERPERSONAL relations, LEISURE, NURSING home residents, QUALITY of life, QUESTIONNAIRES, RELIGION, LIFE satisfaction, SPIRITUALITY, FAMILY relations, PSYCHOSOCIAL factors, WELL-being, STRUCTURAL equation modeling, RESIDENTIAL care, INDIVIDUAL development, CROSS-sectional method, OLD age
Abstract

To explore what sources of well-being are rated meaningful by older adults in residential care and how they are related to two important well-being outcomes. Two cross-sectional questionnaire studies were conducted in a sample of care residents without cognitive disability (n = 329) and with Alzheimer's disease (n = 104). Structural equation modelling was used to test a hypothesized and exploratory model of different sources as predictors of presence of meaning in life (POM) and satisfaction with life (SWL). Family and Health were rated most meaningful by residents with and without dementia. In both studies, the hypothesized model showed adequate fit with the data. For cognitively intact residents, Personal Growth, Spirituality/Religion, and Interpersonal Relationships predicted POM, while Family and Leisure predicted SWL. Exploratory testing identified Leisure as a possible additional predictor of POM. For residents with Alzheimer's disease, Personal Growth and Society/Community predicted POM, while Family predicted SWL. For older adults in residential care, many sources of well-being remain highly meaningful and some are directly related to the experience of meaning and life satisfaction. Both for residents with and without dementia, continued or increased investment in moments that foster personal growth and family relationships might be especially valuable. [ABSTRACT FROM AUTHOR]

Published
2021
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47. Meaning Through Attachment: An Integrative Framework.

Author

Granqvist, Pehr, Dezutter, Jessie, and Dewitte, Laura

Subjects
SENSE of coherence, AMBIGUITY tolerance
Abstract

We propose an integrative framework, advancing attachment as a vital factor in the development and maintenance of meaning throughout life. First, early attachment experiences provide a foundation for recognizing patterns and acquiring a sense of order and coherence. Furthermore, interactions with sensitive attachment figures stimulate mentalization capacities and exploration of the inner and outer environment, enabling the formation of complex representations of self, others, and the world, ultimately also molding how individuals appraise meaning in their lives. Second, attachment security can serve as an enduring and powerful resource for handling threats to meaning. When confronted with disruptions to meaning, secure attachment provides a coherent set of representations to fall back on and maintain or regain a firm sense of order and meaning under challenging circumstances. Moreover, by promoting cognitive openness and tolerance of ambiguity, secure attachment facilitates flexible and realistic adjustment of meaning representations when encountering discrepant information. [ABSTRACT FROM AUTHOR]

Published
2019
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49. Estimating the reproducibility of psychological science

Author

Anderson, Joanna E., Aarts, Alexander A., Anderson, Christopher J., Attridge, Peter R., Attwood, Angela, Axt, Jordan, Babel, Molly, Bahník, Štěpán, Baranski, Erica, Barnett-Cowan, Michael, Bartmess, Elizabeth, Beer, Jennifer, Bell, Raoul, Bentley, Heather, Beyan, Leah, Binion, Grace, Borsboom, Denny, Bosch, Annick, Bosco, Frank A., Bowman, Sara D., Brandt, Mark J., Braswell, Erin, Brohmer, Hilmar, Brown, Benjamin T., Brown, Kristina, Brüning, Jovita, Calhoun-Sauls, Ann, Callahan, Shannon P., Chagnon, Elizabeth, Chandler, Jesse, Chartier, Christopher R., Cheung, Felix, Christopherson, Cody D., Cillessen, Linda, Clay, Russ, Cleary, Hayley, Cloud, Mark D., Conn, Michael, Cohoon, Johanna, Columbus, Simon, Cordes, Andreas, Costantini, Giulio, Alvarez, Leslie D Cramblet, Cremata, Ed, Crusius, Jan, DeCoster, Jamie, DeGaetano, Michelle A., Penna, Nicolás Delia, Den Bezemer, Bobby, Deserno, Marie K., Devitt, Olivia, Dewitte, Laura, Dobolyi, David G., Dodson, Geneva T., Donnellan, M. Brent, Donohue, Ryan, Dore, Rebecca A., Dorrough, Angela, Dreber, Anna, Dugas, Michelle, Dunn, Elizabeth W., Easey, Kayleigh, Eboigbe, Sylvia, Eggleston, Casey, Embley, Jo, Epskamp, Sacha, Errington, Timothy M., Estel, Vivien, Farach, Frank J., Feather, Jenelle, Fedor, Anna, Fernández-Castilla, Belén, Fiedler, Susann, Field, James G., Fitneva, Stanka A., Flagan, Taru, Forest, Amanda L., Forsell, Eskil, Foster, Joshua D., Frank, Michael C., Frazier, Rebecca S., Fuchs, Heather, Gable, Philip, Galak, Jeff, Galliani, Elisa Maria, Gampa, Anup, Garcia, Sara, Gazarian, Douglas, Gilbert, Elizabeth, Giner-Sorolla, Roger, Glöckner, Andreas, Goellner, Lars, Goh, Jin X., Goldberg, Rebecca, Goodbourn, Patrick T., Gordon-McKeon, Shauna, Gorges, Bryan, Gorges, Jessie, Goss, Justin, Graham, Jesse, Grange, James A., Gray, Jeremy, Hartgerink, Chris, Hartshorne, Joshua, Hasselman, Fred, Hayes, Timothy, Heikensten, Emma, Henninger, Felix, Hodsoll, John, Holubar, Taylor, Hoogendoorn, Gea, Humphries, Denise J., Hung, Cathy O Y, Immelman, Nathali, Irsik, Vanessa C., Jahn, Georg, Jäkel, Frank, Jekel, Marc, Johannesson, Magnus, Johnson, Larissa G., Johnson, David J., Johnson, Kate M., Johnston, William J., Jonas, Kai, Joy-Gaba, Jennifer A., Kappes, Heather Barry, Kelso, Kim, Kidwell, Mallory C., Kim, Seung Kyung, Kirkhart, Matthew, Kleinberg, Bennett, Knežević, Goran, Kolorz, Franziska Maria, Kossakowski, Jolanda J., Krause, Robert Wilhelm, Krijnen, Job, Kuhlmann, Tim, Kunkels, Yoram K., Kyc, Megan M., Lai, Calvin K., Laique, Aamir, Lakens, Daniël, Lane, Kristin A., Lassetter, Bethany, Lazarević, Ljiljana B., Le Bel, Etienne P., Lee, Key Jung, Lee, Minha, Lemm, Kristi, Levitan, Carmel A., Lewis, Melissa, Lin, Lin, Lin, Stephanie, Lippold, Matthias, Loureiro, Darren, Luteijn, Ilse, MacKinnon, Sean, Mainard, Heather N., Marigold, Denise C., Martin, Daniel P., Martinez, Tylar, Masicampo, E. J., Matacotta, Josh, Mathur, Maya, May, Michael, Mechin, Nicole, Mehta, Pranjal, Meixner, Johannes, Melinger, Alissa, Miller, Jeremy K., Miller, Mallorie, Moore, Katherine, Möschl, Marcus, Motyl, Matt, Müller, Stephanie M., Munafo, Marcus, Neijenhuijs, Koen I., Nervi, Taylor, Nicolas, Gandalf, Nilsonne, Gustav, Nosek, Brian A., Nuijten, Michèle B., Olsson, Catherine, Osborne, Colleen, Ostkamp, Lutz, Pavel, Misha, Penton-Voak, Ian S., Perna, Olivia, Pernet, Cyril, Perugini, Marco, Pipitone, R. Nathan, Pitts, Michael, Plessow, Franziska, Prenoveau, Jason M., Rahal, Rima Maria, Ratliff, Kate A., Reinhard, David, Renkewitz, Frank, Ricker, Ashley A., Rigney, Anastasia, Rivers, Andrew M., Roebke, Mark, Rutchick, Abraham M., Ryan, Robert S., Sahin, Onur, Saide, Anondah, Sandstrom, Gillian M., Santos, David, Saxe, Rebecca, Schlegelmilch, René, Schmidt, Kathleen, Scholz, Sabine, Seibel, Larissa, Selterman, Dylan Faulkner, Shaki, Samuel, Simpson, William B., Sinclair, H. Colleen, Skorinko, Jeanine L M, Slowik, Agnieszka, Snyder, Joel S., Soderberg, Courtney, Sonnleitner, Carina, Spencer, Nick, Spies, Jeffrey R., Steegen, Sara, Stieger, Stefan, Strohminger, Nina, Sullivan, Gavin B., Talhelm, Thomas, Tapia, Megan, Te Dorsthorst, Anniek, Thomae, Manuela, Thomas, Sarah L., Tio, Pia, Traets, Frits, Tsang, Steve, Tuerlinckx, Francis, Turchan, Paul, Valášek, Milan, Van't Veer, Anna E., Van Aert, Robbie, Van Assen, Marcel, Van Bork, Riet, Van De Ven, Mathijs, Van Den Bergh, Don, Van Der Hulst, Marije, Van Dooren, Roel, Van Doorn, Johnny, Van Renswoude, Daan R., Van Rijn, Hedderik, Vanpaemel, Wolf, Echeverría, Alejandro Vásquez, Vazquez, Melissa, Velez, Natalia, Vermue, Marieke, Verschoor, Mark, Vianello, Michelangelo, Voracek, Martin, Vuu, Gina, Wagenmakers, Eric Jan, Weerdmeester, Joanneke, Welsh, Ashlee, Westgate, Erin C., Wissink, Joeri, Wood, Michael, Woods, Andy, Wright, Emily, Wu, Sining, Zeelenberg, Marcel, Zuni, Kellylynn, Anderson, Joanna E., Aarts, Alexander A., Anderson, Christopher J., Attridge, Peter R., Attwood, Angela, Axt, Jordan, Babel, Molly, Bahník, Štěpán, Baranski, Erica, Barnett-Cowan, Michael, Bartmess, Elizabeth, Beer, Jennifer, Bell, Raoul, Bentley, Heather, Beyan, Leah, Binion, Grace, Borsboom, Denny, Bosch, Annick, Bosco, Frank A., Bowman, Sara D., Brandt, Mark J., Braswell, Erin, Brohmer, Hilmar, Brown, Benjamin T., Brown, Kristina, Brüning, Jovita, Calhoun-Sauls, Ann, Callahan, Shannon P., Chagnon, Elizabeth, Chandler, Jesse, Chartier, Christopher R., Cheung, Felix, Christopherson, Cody D., Cillessen, Linda, Clay, Russ, Cleary, Hayley, Cloud, Mark D., Conn, Michael, Cohoon, Johanna, Columbus, Simon, Cordes, Andreas, Costantini, Giulio, Alvarez, Leslie D Cramblet, Cremata, Ed, Crusius, Jan, DeCoster, Jamie, DeGaetano, Michelle A., Penna, Nicolás Delia, Den Bezemer, Bobby, Deserno, Marie K., Devitt, Olivia, Dewitte, Laura, Dobolyi, David G., Dodson, Geneva T., Donnellan, M. Brent, Donohue, Ryan, Dore, Rebecca A., Dorrough, Angela, Dreber, Anna, Dugas, Michelle, Dunn, Elizabeth W., Easey, Kayleigh, Eboigbe, Sylvia, Eggleston, Casey, Embley, Jo, Epskamp, Sacha, Errington, Timothy M., Estel, Vivien, Farach, Frank J., Feather, Jenelle, Fedor, Anna, Fernández-Castilla, Belén, Fiedler, Susann, Field, James G., Fitneva, Stanka A., Flagan, Taru, Forest, Amanda L., Forsell, Eskil, Foster, Joshua D., Frank, Michael C., Frazier, Rebecca S., Fuchs, Heather, Gable, Philip, Galak, Jeff, Galliani, Elisa Maria, Gampa, Anup, Garcia, Sara, Gazarian, Douglas, Gilbert, Elizabeth, Giner-Sorolla, Roger, Glöckner, Andreas, Goellner, Lars, Goh, Jin X., Goldberg, Rebecca, Goodbourn, Patrick T., Gordon-McKeon, Shauna, Gorges, Bryan, Gorges, Jessie, Goss, Justin, Graham, Jesse, Grange, James A., Gray, Jeremy, Hartgerink, Chris, Hartshorne, Joshua, Hasselman, Fred, Hayes, Timothy, Heikensten, Emma, Henninger, Felix, Hodsoll, John, Holubar, Taylor, Hoogendoorn, Gea, Humphries, Denise J., Hung, Cathy O Y, Immelman, Nathali, Irsik, Vanessa C., Jahn, Georg, Jäkel, Frank, Jekel, Marc, Johannesson, Magnus, Johnson, Larissa G., Johnson, David J., Johnson, Kate M., Johnston, William J., Jonas, Kai, Joy-Gaba, Jennifer A., Kappes, Heather Barry, Kelso, Kim, Kidwell, Mallory C., Kim, Seung Kyung, Kirkhart, Matthew, Kleinberg, Bennett, Knežević, Goran, Kolorz, Franziska Maria, Kossakowski, Jolanda J., Krause, Robert Wilhelm, Krijnen, Job, Kuhlmann, Tim, Kunkels, Yoram K., Kyc, Megan M., Lai, Calvin K., Laique, Aamir, Lakens, Daniël, Lane, Kristin A., Lassetter, Bethany, Lazarević, Ljiljana B., Le Bel, Etienne P., Lee, Key Jung, Lee, Minha, Lemm, Kristi, Levitan, Carmel A., Lewis, Melissa, Lin, Lin, Lin, Stephanie, Lippold, Matthias, Loureiro, Darren, Luteijn, Ilse, MacKinnon, Sean, Mainard, Heather N., Marigold, Denise C., Martin, Daniel P., Martinez, Tylar, Masicampo, E. J., Matacotta, Josh, Mathur, Maya, May, Michael, Mechin, Nicole, Mehta, Pranjal, Meixner, Johannes, Melinger, Alissa, Miller, Jeremy K., Miller, Mallorie, Moore, Katherine, Möschl, Marcus, Motyl, Matt, Müller, Stephanie M., Munafo, Marcus, Neijenhuijs, Koen I., Nervi, Taylor, Nicolas, Gandalf, Nilsonne, Gustav, Nosek, Brian A., Nuijten, Michèle B., Olsson, Catherine, Osborne, Colleen, Ostkamp, Lutz, Pavel, Misha, Penton-Voak, Ian S., Perna, Olivia, Pernet, Cyril, Perugini, Marco, Pipitone, R. Nathan, Pitts, Michael, Plessow, Franziska, Prenoveau, Jason M., Rahal, Rima Maria, Ratliff, Kate A., Reinhard, David, Renkewitz, Frank, Ricker, Ashley A., Rigney, Anastasia, Rivers, Andrew M., Roebke, Mark, Rutchick, Abraham M., Ryan, Robert S., Sahin, Onur, Saide, Anondah, Sandstrom, Gillian M., Santos, David, Saxe, Rebecca, Schlegelmilch, René, Schmidt, Kathleen, Scholz, Sabine, Seibel, Larissa, Selterman, Dylan Faulkner, Shaki, Samuel, Simpson, William B., Sinclair, H. Colleen, Skorinko, Jeanine L M, Slowik, Agnieszka, Snyder, Joel S., Soderberg, Courtney, Sonnleitner, Carina, Spencer, Nick, Spies, Jeffrey R., Steegen, Sara, Stieger, Stefan, Strohminger, Nina, Sullivan, Gavin B., Talhelm, Thomas, Tapia, Megan, Te Dorsthorst, Anniek, Thomae, Manuela, Thomas, Sarah L., Tio, Pia, Traets, Frits, Tsang, Steve, Tuerlinckx, Francis, Turchan, Paul, Valášek, Milan, Van't Veer, Anna E., Van Aert, Robbie, Van Assen, Marcel, Van Bork, Riet, Van De Ven, Mathijs, Van Den Bergh, Don, Van Der Hulst, Marije, Van Dooren, Roel, Van Doorn, Johnny, Van Renswoude, Daan R., Van Rijn, Hedderik, Vanpaemel, Wolf, Echeverría, Alejandro Vásquez, Vazquez, Melissa, Velez, Natalia, Vermue, Marieke, Verschoor, Mark, Vianello, Michelangelo, Voracek, Martin, Vuu, Gina, Wagenmakers, Eric Jan, Weerdmeester, Joanneke, Welsh, Ashlee, Westgate, Erin C., Wissink, Joeri, Wood, Michael, Woods, Andy, Wright, Emily, Wu, Sining, Zeelenberg, Marcel, and Zuni, Kellylynn

Abstract

Reproducibility is a defining feature of science, but the extent to which it characterizes current research is unknown. We conducted replications of 100 experimental and correlational studies published in three psychology journals using high-powered designs and original materials when available. Replication effects were half the magnitude of original effects, representing a substantial decline. Ninety-seven percent of original studies had statistically significant results. Thirty-six percent of replications had statistically significant results; 47% of original effect sizes were in the 95% confidence interval of the replication effect size; 39% of effects were subjectively rated to have replicated the original result; and if no bias in original results is assumed, combining original and replication results left 68% with statistically significant effects. Correlational tests suggest that replication success was better predicted by the strength of original evidence than by characteristics of the original and replication teams.

Published
2015

50. Estimating the reproducibility of psychological science

Author

Aarts, Alexander A., Anderson, Joanna E., Anderson, Christopher J., Attridge, Peter R., Attwood, Angela, Axt, Jordan, Babel, Molly, Bahnik, Stepan, Baranski, Erica, Barnett-Cowan, Michael, Bartmess, Elizabeth, Beer, Jennifer, Bell, Raoul, Bentley, Heather, Beyan, Leah, Binion, Grace, Borsboom, Denny, Bosch, Annick, Bosco, Frank A., Bowman, Sara D., Brandt, Mark J., Braswell, Erin, Brohmer, Hilmar, Brown, Benjamin T., Brown, Kristina, Bruening, Jovita, Calhoun-Sauls, Ann, Callahan, Shannon P., Chagnon, Elizabeth, Chandler, Jesse, Chartier, Christopher R., Cheung, Felix, Christopherson, Cody D., Cillessen, Linda, Clay, Russ, Cleary, Hayley, Cloud, Mark D., Cohn, Michael, Cohoon, Johanna, Columbus, Simon, Cordes, Andreas, Costantini, Giulio, Alvarez, Leslie D. Cramblet, Cremata, Ed, Crusius, Jan, DeCoster, Jamie, DeGaetano, Michelle A., Della Penna, Nicolas, den Bezemer, Bobby, Deserno, Marie K., Devitt, Olivia, Dewitte, Laura, Dobolyi, David G., Dodson, Geneva T., Donnellan, M. Brent, Donohue, Ryan, Dore, Rebecca A., Dorrough, Angela, Dreber, Anna, Dugas, Michelle, Dunn, Elizabeth W., Easey, Kayleigh, Eboigbe, Sylvia, Eggleston, Casey, Embley, Jo, Epskamp, Sacha, Errington, Timothy M., Estel, Vivien, Farach, Frank J., Feather, Jenelle, Fedor, Anna, Fernandez-Castilla, Belen, Fiedler, Susann, Field, James G., Fitneva, Stanka A., Flagan, Taru, Forest, Amanda L., Forsell, Eskil, Foster, Joshua D., Frank, Michael C., Frazier, Rebecca S., Fuchs, Heather, Gable, Philip, Galak, Jeff, Galliani, Elisa Maria, Gampa, Anup, Garcia, Sara, Gazarian, Douglas, Gilbert, Elizabeth, Giner-Sorolla, Roger, Gloeckner, Andreas, Goellner, Lars, Goh, Jin X., Goldberg, Rebecca, Goodbourn, Patrick T., Gordon-McKeon, Shauna, Gorges, Bryan, Gorges, Jessie, Goss, Justin, Graham, Jesse, Grange, James A., Gray, Jeremy, Hartgerink, Chris, Hartshorne, Joshua, Hasselman, Fred, Hayes, Timothy, Heikensten, Emma, Henninger, Felix, Hodsoll, John, Holubar, Taylor, Hoogendoorn, Gea, Humphries, Denise J., Hung, Cathy O. -Y., Immelman, Nathali, Irsik, Vanessa C., Jahn, Georg, Jaekel, Frank, Jekel, Marc, Johannesson, Magnus, Johnson, Larissa G., Johnson, David J., Johnson, Kate M., Johnston, William J., Jonas, Kai, Joy-Gaba, Jennifer, Kappes, Heather Barry, Kelso, Kim, Kidwell, Mallory C., Kim, Seung Kyung, Kirkhart, Matthew, Kleinberg, Bennett, Knežević, Goran, Kolorz, Franziska Maria, Kossakowski, Jolanda J., Krause, Robert Wilhelm, Krijnen, Job, Kuhlmann, Tim, Kunkels, Yoram K., Kyc, Megan M., Lai, Calvin K., Laique, Aamir, Lakens, Daniel, Lane, Kristin A., Lassetter, Bethany, Lazarević, Ljiljana, LeBel, Etienne P., Lee, Key Jung, Lee, Minha, Lemm, Kristi, Levitan, Carmel A., Lewis, Melissa, Lin, Lin, Lin, Stephanie, Lippold, Matthias, Loureiro, Darren, Luteijn, Ilse, Mackinnon, Sean, Mainard, Heather N., Marigold, Denise C., Martin, Daniel P., Martinez, Tylar, Masicampo, E. J., Matacotta, Josh, Mathur, Maya, May, Michael, Mechin, Nicole, Mehta, Pranjal, Meixner, Johannes, Melinger, Alissa, Miller, Jeremy K., Miller, Mallorie, Moore, Katherine, Moeschl, Marcus, Motyl, Matt, Mueller, Stephanie M., Munafo, Marcus, Neijenhuijs, Koen I., Nervi, Taylor, Gandalf, Nicolas, Nilsonne, Gustav, Nosek, Brian A., Nuijten, Michele B., Olsson, Catherine, Osborne, Colleen, Ostkamp, Lutz, Pavel, Misha, Penton-Voak, Ian S., Perna, Olivia, Pernet, Cyril, Perugini, Marco, Pipitone, R. Nathan, Pitts, Michael, Plessow, Franziska, Prenoveau, Jason M., Rahal, Rima-Maria, Ratliff, Kate A., Reinhard, David, Renkewitz, Frank, Ricker, Ashley A., Rigney, Anastasia, Rivers, Andrew M., Roebke, Mark, Rutchick, Abraham M., Ryan, Robert S., Sahin, Onur, Saide, Anondah, Sandstrom, Gillian M., Santos, David, Saxe, Rebecca, Schlegelmilch, Rene, Schmidt, Kathleen, Scholz, Sabine, Seibel, Larissa, Selterman, Dylan Faulkner, Shaki, Samuel, Simpson, William B., Sinclair, H. Colleen, Skorinko, Jeanine L. M., Slowik, Agnieszka, Snyder, Joel S., Soderberg, Courtney, Sonnleitner, Carina, Spencer, Nick, Spies, Jeffrey R., Steegen, Sara, Stieger, Stefan, Strohminger, Nina, Sullivan, Gavin B., Talhelm, Thomas, Tapia, Megan, te Dorsthorst, Anniek, Thomae, Manuela, Thomas, Sarah L., Tio, Pia, Traets, Frits, Tsang, Steve, Tuerlinckx, Francis, Turchan, Paul, Valasek, Milan, van 't Veer, Anna E., Van Aert, Robbie, van Assen, Marcel, van Bork, Riet, van de Ven, Mathijs, van den Bergh, Don, van der Hulst, Marije, van Dooren, Roel, van Doorn, Johnny, van Renswoude, Daan R., van Rijn, Hedderik, Vanpaemel, Wolf, Echeverria, Alejandro Vasquez, Vazquez, Melissa, Velez, Natalia, Vermue, Marieke, Verschoor, Mark, Vianello, Michelangelo, Voracek, Martin, Vuu, Gina, Wagenmakers, Eric-Jan, Weerdmeester, Joanneke, Welsh, Ashlee, Westgate, Erin C., Wissink, Joeri, Wood, Michael, Woods, Andy, Wright, Emily, Wu, Sining, Zeelenberg, Marcel, Zuni, Kellylynn, Aarts, Alexander A., Anderson, Joanna E., Anderson, Christopher J., Attridge, Peter R., Attwood, Angela, Axt, Jordan, Babel, Molly, Bahnik, Stepan, Baranski, Erica, Barnett-Cowan, Michael, Bartmess, Elizabeth, Beer, Jennifer, Bell, Raoul, Bentley, Heather, Beyan, Leah, Binion, Grace, Borsboom, Denny, Bosch, Annick, Bosco, Frank A., Bowman, Sara D., Brandt, Mark J., Braswell, Erin, Brohmer, Hilmar, Brown, Benjamin T., Brown, Kristina, Bruening, Jovita, Calhoun-Sauls, Ann, Callahan, Shannon P., Chagnon, Elizabeth, Chandler, Jesse, Chartier, Christopher R., Cheung, Felix, Christopherson, Cody D., Cillessen, Linda, Clay, Russ, Cleary, Hayley, Cloud, Mark D., Cohn, Michael, Cohoon, Johanna, Columbus, Simon, Cordes, Andreas, Costantini, Giulio, Alvarez, Leslie D. Cramblet, Cremata, Ed, Crusius, Jan, DeCoster, Jamie, DeGaetano, Michelle A., Della Penna, Nicolas, den Bezemer, Bobby, Deserno, Marie K., Devitt, Olivia, Dewitte, Laura, Dobolyi, David G., Dodson, Geneva T., Donnellan, M. Brent, Donohue, Ryan, Dore, Rebecca A., Dorrough, Angela, Dreber, Anna, Dugas, Michelle, Dunn, Elizabeth W., Easey, Kayleigh, Eboigbe, Sylvia, Eggleston, Casey, Embley, Jo, Epskamp, Sacha, Errington, Timothy M., Estel, Vivien, Farach, Frank J., Feather, Jenelle, Fedor, Anna, Fernandez-Castilla, Belen, Fiedler, Susann, Field, James G., Fitneva, Stanka A., Flagan, Taru, Forest, Amanda L., Forsell, Eskil, Foster, Joshua D., Frank, Michael C., Frazier, Rebecca S., Fuchs, Heather, Gable, Philip, Galak, Jeff, Galliani, Elisa Maria, Gampa, Anup, Garcia, Sara, Gazarian, Douglas, Gilbert, Elizabeth, Giner-Sorolla, Roger, Gloeckner, Andreas, Goellner, Lars, Goh, Jin X., Goldberg, Rebecca, Goodbourn, Patrick T., Gordon-McKeon, Shauna, Gorges, Bryan, Gorges, Jessie, Goss, Justin, Graham, Jesse, Grange, James A., Gray, Jeremy, Hartgerink, Chris, Hartshorne, Joshua, Hasselman, Fred, Hayes, Timothy, Heikensten, Emma, Henninger, Felix, Hodsoll, John, Holubar, Taylor, Hoogendoorn, Gea, Humphries, Denise J., Hung, Cathy O. -Y., Immelman, Nathali, Irsik, Vanessa C., Jahn, Georg, Jaekel, Frank, Jekel, Marc, Johannesson, Magnus, Johnson, Larissa G., Johnson, David J., Johnson, Kate M., Johnston, William J., Jonas, Kai, Joy-Gaba, Jennifer, Kappes, Heather Barry, Kelso, Kim, Kidwell, Mallory C., Kim, Seung Kyung, Kirkhart, Matthew, Kleinberg, Bennett, Knežević, Goran, Kolorz, Franziska Maria, Kossakowski, Jolanda J., Krause, Robert Wilhelm, Krijnen, Job, Kuhlmann, Tim, Kunkels, Yoram K., Kyc, Megan M., Lai, Calvin K., Laique, Aamir, Lakens, Daniel, Lane, Kristin A., Lassetter, Bethany, Lazarević, Ljiljana, LeBel, Etienne P., Lee, Key Jung, Lee, Minha, Lemm, Kristi, Levitan, Carmel A., Lewis, Melissa, Lin, Lin, Lin, Stephanie, Lippold, Matthias, Loureiro, Darren, Luteijn, Ilse, Mackinnon, Sean, Mainard, Heather N., Marigold, Denise C., Martin, Daniel P., Martinez, Tylar, Masicampo, E. J., Matacotta, Josh, Mathur, Maya, May, Michael, Mechin, Nicole, Mehta, Pranjal, Meixner, Johannes, Melinger, Alissa, Miller, Jeremy K., Miller, Mallorie, Moore, Katherine, Moeschl, Marcus, Motyl, Matt, Mueller, Stephanie M., Munafo, Marcus, Neijenhuijs, Koen I., Nervi, Taylor, Gandalf, Nicolas, Nilsonne, Gustav, Nosek, Brian A., Nuijten, Michele B., Olsson, Catherine, Osborne, Colleen, Ostkamp, Lutz, Pavel, Misha, Penton-Voak, Ian S., Perna, Olivia, Pernet, Cyril, Perugini, Marco, Pipitone, R. Nathan, Pitts, Michael, Plessow, Franziska, Prenoveau, Jason M., Rahal, Rima-Maria, Ratliff, Kate A., Reinhard, David, Renkewitz, Frank, Ricker, Ashley A., Rigney, Anastasia, Rivers, Andrew M., Roebke, Mark, Rutchick, Abraham M., Ryan, Robert S., Sahin, Onur, Saide, Anondah, Sandstrom, Gillian M., Santos, David, Saxe, Rebecca, Schlegelmilch, Rene, Schmidt, Kathleen, Scholz, Sabine, Seibel, Larissa, Selterman, Dylan Faulkner, Shaki, Samuel, Simpson, William B., Sinclair, H. Colleen, Skorinko, Jeanine L. M., Slowik, Agnieszka, Snyder, Joel S., Soderberg, Courtney, Sonnleitner, Carina, Spencer, Nick, Spies, Jeffrey R., Steegen, Sara, Stieger, Stefan, Strohminger, Nina, Sullivan, Gavin B., Talhelm, Thomas, Tapia, Megan, te Dorsthorst, Anniek, Thomae, Manuela, Thomas, Sarah L., Tio, Pia, Traets, Frits, Tsang, Steve, Tuerlinckx, Francis, Turchan, Paul, Valasek, Milan, van 't Veer, Anna E., Van Aert, Robbie, van Assen, Marcel, van Bork, Riet, van de Ven, Mathijs, van den Bergh, Don, van der Hulst, Marije, van Dooren, Roel, van Doorn, Johnny, van Renswoude, Daan R., van Rijn, Hedderik, Vanpaemel, Wolf, Echeverria, Alejandro Vasquez, Vazquez, Melissa, Velez, Natalia, Vermue, Marieke, Verschoor, Mark, Vianello, Michelangelo, Voracek, Martin, Vuu, Gina, Wagenmakers, Eric-Jan, Weerdmeester, Joanneke, Welsh, Ashlee, Westgate, Erin C., Wissink, Joeri, Wood, Michael, Woods, Andy, Wright, Emily, Wu, Sining, Zeelenberg, Marcel, and Zuni, Kellylynn

Abstract

Reproducibility is a defining feature of science, but the extent to which it characterizes current research is unknown. We conducted replications of 100 experimental and correlational studies published in three psychology journals using high-powered designs and original materials when available. Replication effects were half the magnitude of original effects, representing a substantial decline. Ninety-seven percent of original studies had statistically significant results. Thirty-six percent of replications had statistically significant results; 47% of original effect sizes were in the 95% confidence interval of the replication effect size; 39% of effects were subjectively rated to have replicated the original result; and if no bias in original results is assumed, combining original and replication results left 68% with statistically significant effects. Correlational tests suggest that replication success was better predicted by the strength of original evidence than by characteristics of the original and replication teams.

Published
2015

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