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Gender disparities in retention in pathways to science continue to vary widely by course. Undergraduates intending to study prehealth and premedicine often represent a majority of students enrolled in introductory science courses, contribute to a large number of eventual science degree earners, and are a population that typically includes a high number of women. However, gender differences in attrition, grades, and attitudes persist in the introductory science courses required by undergraduate preheath and premedical programs, particularly within the physical sciences (i.e., Chemistry and Physics). We use structural equation modeling to study 416 undergraduate students across multiple sections of an Algebra-based Physics course, a common course on the prehealth and premedical track where large gender differences in grades, retention and competency beliefs have been documented. Our analysis focuses on identifying potential academic and attitudinal sources for gender differences in students' beliefs about their Physics abilities at the end of the course, and retention to the second physics course, which is often influenced by these competency beliefs. Results suggest that while men's ability beliefs in Physics are relatively stable and largely derived from early performance indicators, this is a smaller source of ability beliefs for women. Instead, women's ability beliefs are mediated during the course through their sense of belonging in Physics, and the extent to which they believe that Physics ability is fixed or malleable. These findings can inform the design of interventions in Physics courses that specifically target the development of ability beliefs for women intending medical careers.

Women take qualifying exams and enter medical school at substantially lower levels than predicted by their interest in medical degrees at the end of high school. We examined how science course experiences contribute to gendered attrition in premed using a multicohort data set of 8,253 undergraduates taking the traditional premed sequence of introductory science courses at a public research university between 2008 and 2016. Gendered attrition was not based in academic performance, was specific to high-performing women, and yet was grounded in competency beliefs. The result is that high-performing women often graduate with lower paying, lower status degrees. Motivational interventions in premed science courses will be critical for retaining high-performing women in premed, an important outcome with implications for equity and women's health.

Science learning is most often examined within formal education contexts, even though students spend more of their lives outside of the classroom. Students may interact with scientific phenomena during these out-of-school experiences, providing additional opportunities for learning to take place. Prior studies have found that optional science experiences have positive effects on science knowledge and attitudes. However, these studies do not always account for initial differences between students who are able to participate in many optional experiences and those who cannot. Moreover, many studies focus on high-quality science programs, which may not be representative of the average out-of-school experience. Using a longitudinal dataset of 3,700 6th and 8th grade students in urban and suburban schools from two regions in the United States, the current study investigates the effects of typically occurring optional science experiences during the school year on the development of science knowledge and attitudes. Using propensity score matching, we matched participating and nonparticipating students for characteristics that drive self-selection into these experiences, then analyzed separately for effects of school-related versus home-related science learning experiences. Stable patterns across analytic models reveal growth in science attitudes with both school- and home-related science experiences, but a greater relative decline in science knowledge with school-related science experiences. Thus, typically occurring optional science experiences can influence students' attitudes and knowledge, but the effects can vary by the type of experience that students attend.

A major goal of science education reform is to produce curricula that improve the learning of all students. In this study, the authors explore the use of design-based learning (DBL) to achieve this end. They examined two middle school science classes taught by a teacher who switched for the first time from a standard, scripted inquiry approach to a DBL approach. The researchers were particularly interested in two questions. First, will students previously labeled high and low-achievers become equally engaged by DBL? Second, will the traditional gaps in science achievement associated with race/ethnicity, gender, and socio-economic status be increased or reduced? The findings presented two aspects of learning: engagement and achievement. Engagement has the potential to highlight students' performance in a way that standardized assessment methods do not reveal. The findings of this study suggest that DBL has the potential to increase students' desire to learn, enhance students' success in science class, and increase students' interest in science topics. (Contains 2 tables and 3 figures.)

Background: A major concern in science education involves the under-representation of many groups in science and technology fields, especially by gender (Brotman and Moore, J Res Sci Teach 45:971-1002, 2008; Clark Blickenstaff, Gend Educ 17:369-386, 2006), stemming from an intersection of systemic obstacles (Cantú, Equity Excell Educ 45:472-487, 2012; Rosa and Mensah, Phys Rev Phys Educ Res 12:020113, 2016). Research on persistence of minoritized populations within science trajectories has often highlighted identity as particularly important (Archer et al., Sci Educ 94:617-639, 2010; Barton and Calabrese, Am Educ Res J 50:37-75, 2007; Barton et al., Am Educ Res J 50:37-75, 2013; Merolla and Serpe, Soc Psychol Educ 16:575-597, 2013). Results: This study quantitatively investigated the nature of science identity in over 1300 seventh and ninth grade students from a range of urban US public schools using survey data on science identity, choice preferences, and optional science experiences. Factor analyses validated this conceptualization of science identity as integrating perceived internal and external identity components. Regression analyses revealed the importance of this conceptualization of science identity for driving students' choices at this crucial developmental period. Furthermore, science identity had a complex differential function in supporting students' optional science choices by gender. Conclusions: The novel contribution to the science identity field highlights the specific multi-component ways in which students endorse science identity in middle school and early high school. There was an important finding that science identity has a complex differential function in supporting student's optional science choices by gender. Thus, at this age, developing a strong science identity is especially critical for girls.

Four principles of cognitive science were used to make systematic revisions in middle school science instructional modules from two kinds of curriculum: one popular textbook series and one popular hands-on series (two modules each). Schools were randomly assigned to 1 of the 3 arms (cognitive science modifications with professional development, active control with professional development, or business-as-usual). Two cohorts of students were followed in each arm for each setting. There were significant benefits of the cognitive science intervention, but the nature of effects varied for the two settings and curricula. For the text-based curriculum, positive effects of cognitive science modifications were concentrated in classrooms with lower proportions of underrepresented minority students. For the hands-on curriculum, there were positive effects that were not linked to school composition. Participation in the active control did not significantly improve student learning. Implications for policy and research are discussed.

Argument diagramming is the process of spatially representing an argument by its component parts and their relationships. A growing body of evidence supports the use of argument diagramming to aid student learning and writing within disciplines including science education. However, most of these studies have focused on basic contrasts between diagramming and no diagramming. The purpose of this study was to learn how different diagramming frameworks affect the benefits afforded by argument diagramming. Three groups of undergraduate students in psychology research methods lab courses were given either no diagramming support, support with a domain-general framework, or support with a domain-specific framework to help them write a research paper introduction. Students given any diagramming support included more relevant citations and considered opposing citations in their papers. Students using the domain-specific framework wrote more about the scientific validity of cited studies than the other two groups, whereas students using the domain-general framework trended towards included more supporting citations.

This concluding commentary takes the perspective of research on practicing scientists and engineers to consider what open areas and future directions on relational thinking and learning should be considered beyond the impressive research presented in the special issue. Areas for more work include (a) a need to examine educational applications of relational thinking in divergent reasoning, rather than primarily in convergent reasoning; (b) considerations of when to "not" focus on relational reasoning in learning; (c) more research on the distributed nature of relational reasoning across students in a class, and to embedded physical, social, and historical contexts; (d) treatment of the hot components of relational reasoning including motivational and emotional processes; and (e) more attention to how relational reasoning is changed by the details of modalities rather than treating all contents as abstract symbols.

Learners encounter science in a wide variety of contexts beyond the science classroom which collectively could be quite influential on student attitudes and abilities. But relatively little is known about the relative influence of different forms of informal science experiences, especially for the kinds of experiences that students typically access. We conduct factor and regression analyses on data collected from a large number of diverse public-school attending 6th and 8th graders drawn from two regions in the USA. Students completed a science reasoning measure and surveys of attitudes, previously completed informal science learning experiences, and demographic factors. Factor analyses identify four dimensions of informal science learning participation (in home, semiformal, nature, and museums). Regression analyses find a relative specificity of effects, with particular outcomes associated with a subset of the forms of informal science participation, highlighting the importance of controlling for correlated factors. There were also a few differences by grade level, with different experiences influencing the development of competency beliefs in science in early vs. late middle schoolers.

As the use of project-based learning becomes more frequent in the K-12 science classroom, and in chemistry classrooms in particular, teachers have begun to identify practical questions about implementation that should be addressed empirically. One such question concerns whether there is an ideal group size that fosters individual student achievement. The current project was designed to assess how group size might impact student chemistry content learning in a project-based learning environment, and how well students are prepared to transfer this new knowledge to other relevant areas. The results indicated that particular conditions (e.g. advanced classrooms) interact with group size (a seemingly superficial feature) to differentially influence the depth and level of student learning related to the unit and student's ability to transfer his/her knowledge outside of the context of a project-based learning unit.

The focus of this research was an evaluation of the impact of teacher professional development (PD) on student achievement during implementation of a reform curriculum. The PD consisted of five four-hour workshop sessions distributed over the time teachers were implementing the reform curriculum in their classrooms. The research was conducted in a mid-size, urban school district over the span of two years. Three groups of teachers were contrasted: teachers who continued to use the established curriculum (N = 5), teachers who implemented the reform curriculum without participating in the PD sessions (N = 5), and teachers who implemented the reform curriculum while participating in the PD sessions (N = 13). Teachers who participated in the PD had approximately a one standard deviation advantage in their students' achievement over those who did not. We collected evidence of particular features of the PD that explained the differences in student achievement. The features included: distributing the workshops throughout the implementation; engaging teachers in an active learning process situated in the curriculum; and facilitating a collaborative community of teacher professionals. This study led us to believe that not only are the individual features of the PD important, but the combination of all three together is particularly powerful. (Contains 2 tables and 1 figure.)

Responding to the increasing math and science teacher shortage in the United States, this study intended to determine which science, engineering, and math (SEM) majors during which years in their undergraduate education and from which academic performance levels are most interested in K-12 teaching. Results may aid policymakers and practitioners in making most effective use of this traditional undergraduate candidate pool when designing K-12 science and math teacher recruitment programs. A survey of SEM majors from two research-oriented, urban universities is used to assess participants' interest in K-12 teaching both compared to other career choices and in isolation. Results indicate that the more successful targets for K-12 teacher recruitment include (1) SEM undergraduates in their junior and senior years independent of SEM major, (2) SEM undergraduates with mid-academic performance levels independent of SEM major and academic year, and (3) math majors followed by natural science majors and, as least promising targets, engineering majors. Results remain independent from gender and ethnicity variables.

While gender parity has been achieved in overall science degree earning, large gaps still exist within many science disciplines. Further, studies addressing gender inequity in science often ignore a large source of undergraduate science degree earners: those who enroll in science courses intending to pursue careers in health or medicine. This study examines pathways toward or away from science degrees in N = 4,345 men and women enrolled in early science courses at a large undergraduate research university. Importantly, to understand shifts in students' academic intentions and how pathways to science may be differential by gender, this study analyzed students' incoming major and career intentions, estimates of incoming academic abilities, and relative performance in science and various non‐science courses. Results show that while men and women initially intending to pursue a science major graduate with science degrees in equal numbers, the plurality of science degree earners are students entering college intending health or medical careers. Further, from those subgroups, a significantly larger proportion of men end up in science, while a significantly larger proportion of women end up outside of STEM completely. Understanding disciplinary differences in gender barriers to science participation can help inform interventions that specifically target those populations. [ABSTRACT FROM AUTHOR]

Ages 10–14 mark a period in which children develop a strong sense of whether science is 'for them,' a time that typically coincides with the start of middle school in the United States and their first exposure to more rigorous science classes and testing. Experiences with science in and out of school can shape children's motivation to choose science careers or participate in voluntary science classes later on, for better or worse. We explore the hypothesis that children who engage in more informal educational science experiences at the start of this period are more likely than their peers to obtain and maintain interest, curiosity, and mastery goals in science (together forming a construct called fascination). We measured 983 children's fascination with science at the beginning and middle of sixth grade. We found that the children who participated in informal science during this time were more likely to maintain or have greater fascination than at the start. These findings held while also controlling for many potentially confounding covariates and are robust across subgroups by gender and race/ethnicity. Further, the effects are largest for those children whose family generally supports their learning. [ABSTRACT FROM AUTHOR]

This paper proposes three new measures of components STEM career preferences (affinity, certainty, and goal), and then explores which dimensions of science learning activation (fascination, values, competency belief, and scientific sensemaking) are predictive of STEM career preferences. Drawn from the ALES14 dataset, a sample of 2938 sixth and eighth grade middle-school students from 11 schools in two purposefully selected diverse areas (Western Pennsylvania & the Bay Area of California) was used for the analyses presented in this paper. These schools were chosen to represent socio-economic and ethnic diversity. Findings indicate that, overall, youth who are activated towards science learning are more likely to have affinity towards STEM careers, certainty about their future career goals, and have identified a specific STEM career goal. However, different dimensions of science learning activation are more strongly correlated with different aspects career preference across different STEM career foci (e.g. science, engineering, technology, health, etc.). Gender, age, minority status, and home resources also have explanatory power. While many results are consistent with prior research, there are also novel results that offer important fodder for future research. Critically, our strategy of measuring affinity towards the specific disciplines that make up STEM, measuring STEM and health career goals separately, and looking at career affinity and career goals separately, offers interesting results and underscores the value of disentangling the conceptual melting pot of what has previously been known as ‘career interest.’ Study findings also have implications for design of science learning opportunities for youth. [ABSTRACT FROM AUTHOR]

The National Research Council framework for science education and the Next Generation Science Standards have developed a need for additional research and development of curricula that is both technologically model-based and includes engineering practices. This is especially the case for biology education. This paper describes a quasi-experimental design study to test the effectiveness of a model-based curriculum focused on the concepts of natural selection and population ecology that makes use of Excel modeling tools (Modeling Instruction in Biology with Excel, MBI-E). The curriculum revolves around the bio-engineering practice of controlling an invasive species. The study takes place in the Midwest within ten high schools teaching a regular-level introductory biology class. A post-test was designed that targeted a number of common misconceptions in both concept areas as well as representational usage. The results of a post-test demonstrate that the MBI-E students significantly outperformed the traditional classes in both natural selection and population ecology concepts, thus overcoming a number of misconceptions. In addition, implementing students made use of more multiple representations as well as demonstrating greater fascination for science. [ABSTRACT FROM AUTHOR]

ABSTRACT Understanding the features of science learning experiences that organize and motivate children at early ages can help educators and researchers find ways to ignite interest to support future passion and learning in the sciences at a time when children's motivation is declining. Using a sample of 252 fifth- and sixth-grade students, we systematically explore differences in children's motivations toward science experiences across context (formal, informal, neutral), manner of interaction (consuming new knowledge, analyzing, action), and topic (e.g., biology, earth science, physics). Motivations toward science were most influenced by topic. Responses were generally consistent across context and manner of interaction. Implications for science education, as well as measurement and assessment methodology, are discussed. [ABSTRACT FROM AUTHOR]