13 results on '"Gander, Pierre"'
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2. Glacially Folded Outwash near Lago Llanquihue, Southern Lake District, Chile
- Author
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Schlüchter, Christian, Gander, Pierre, Lowell, Thomas V., and Denton, George H.
- Published
- 1999
3. Taking the unreal seriously: enriching cognitive science with the notion of fictionality.
- Author
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Gander, Pierre, Szita, Kata, Falck, Andreas, and Thompson, William Hedley
- Subjects
COGNITIVE science ,IMAGINATION ,DEVELOPMENTAL psychology ,TECHNOLOGICAL innovations ,CONCEPT mapping ,MEMORY - Abstract
Fictionality and fictional experiences are ubiquitous in people's everyday lives in the forms of movies, novels, video games, pretense and role playing, and digital technology use. Despite this ubiquity, though, the field of cognitive science has traditionally been dominated by a focus on the real world. Based on the limited understanding from previous research on questions regarding fictional information and the cognitive processes for distinguishing reality from fiction, we argue for the need for a comprehensive and systematic account that reflects on related phenomena, such as narrative comprehension or imagination embedded into general theories of cognition. This is important as incorporating cognitive processing of fictional events into memory theory reshapes the conceptual map of human memory. In this paper, we highlight future challenges for the cognitive studies of fictionality on conceptual, neurological, and computational levels. Taking on these challenges requires an interdisciplinary approach between fields like developmental psychology, philosophy, and the study of narrative comprehension. Our aim is to build on such interdisciplinarity and provide conclusions on the ways in which new theoretical frameworks of fiction cognition can aid understanding human behaviors in a wide range of aspects of people's daily lives, media consumption habits, and digital encounters. Our account also has the potential to inform technological innovations related to training intelligent digital systems to distinguish fact and fiction in the source material. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
4. Differences in Experienced Memory Qualities between Factual and Fictional Events.
- Author
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Gander, Pierre and Lowe, Robert
- Subjects
- *
MEMORY - Abstract
The experienced qualities of memories of factual and fictional events have been little researched previously. The few studies that exist find no or few differences. However, one reason to expect differences in memory qualities is that processing of fact and fiction seem to involve activation of different brain areas. The present study expands earlier research by including a wider range of memory qualities, using positive and negative events, and three time-points: immediately after, after a ten-minute delay and after a five-week delay. Participants (N = 52) read four short stories in English, labelled either fact or fiction, and rated memory qualities on 7-point scales. Results show no differences; however, an interaction was found between fictionality and story emotional valence, in that memories of negative fictional stories are rated as more clear. The higher clarity can be explained by previous findings that negative events from stories are in general remembered in more detail, in combination with the idea that fiction entails simulation to a higher degree than fact. The conclusion is that although a difference in memory qualities between fact and fiction was found in one case, memory qualities seem not to play an operative role when the memory system distinguishes fact from fiction. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
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5. President Obama's Humble Face: An Authentic or a Socially Desirable Posturing? A Study on Reactions to Obama's Autobiographical Self-Disclosures.
- Author
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Mastropietro, Alessia, Bull, Peter, D'Errico, Francesca, Sessa, Isora, Migliorisi, Stefano, Leone, Giovanna, Pacilli, Maria Giuseppina, and Gander, Pierre
- Subjects
INTERRACIAL couples ,FACIAL expression ,SOCIAL injustice ,SOCIAL history ,POLITICAL oratory - Abstract
Referring to the mainstream studies based on the personalization's hypothesis, which positively evaluates signals of dominance shown by leaders, the analysis of Obama's rhetoric stays a relevant exception. His risky recall, during his political talks, of his social difficulties as a child of a mixed couple was in fact one of the more surprising aspects of his success. Nevertheless, reactions to his autobiographical sharing were scarcely explored. Based on the idea that these self-disclosures signal his responsivity toward the audience of low social condition and can, therefore, be defined as a sign of humility, this research aims to test if coherence between Obama's words and his facial expressions of contempt, due to the seriousness of social injustices endured in his childhood, may influence the receivers' perception of such unexpected communication. Before reading a brief autobiographical sharing taken from a "Back-to-school" speech, a highly ritualized monolog the US President addresses each year to students, 175 Italian participants were presented with a photo of Obama displaying either an expression of contempt (taken from the video of the speech) or a neutral expression. Comparisons between self-assessments of perceptions and reactions of participants assigned to the two experimental conditions show that a facial expression of contempt, coherent with words describing his school difficulties, has been crucial for perceiving this humble political discourse as authentic and not as a simple socially desirable posturing. More studies seem to be needed, however, to understand how humble speech could enhance the positive face of leaders or backfire against them. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
6. Generation and Delivery of an Ultraviolet Laser Beam for the RF-Photoinjector of the Awake Electron Beam
- Author
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Fedosseev, Valentin, Batsch, Fabian, Capelli, Candy, Chevallay, Eric, Chritin, Nicolas, Döbert, Steffen, Feniet, Thierry, Friebel, Florence, Gander, Pierre, Granados, Eduardo, Gschwendtner, Edda, Hansen, Jan, Heßler, Christoph, Hüther, Mathias, Martyanov, Mikhail, Moody, Joshua, Muggli, Patric, Panuganti, Harsha, and Szczurek, Krzysztof
- Subjects
MC7: Accelerator Technology ,Physics::Plasma Physics ,Physics::Optics ,Physics::Accelerator Physics ,Physics::Atomic Physics ,Accelerators and Storage Rings ,Accelerator Physics - Abstract
In the AWAKE experiment, the electron beam is used to probe the proton-driven wakefield acceleration in a 10 m long rubidium vapor source. Electron bunches are produced using an RF-gun equipped with a Cs2Te photocathode illuminated by an ultraviolet (UV) laser pulse. To generate the UV laser beam a fraction of the infrared (IR) laser beam used for ionization of rubidium is extracted from the laser system, time-compressed to a picosecond scale and frequency tripled using nonlinear crystals. The transport line of the laser beam over the 20 m distance was built using rigid supports for mirrors and air-evacuated tube to prevent any possible beam pointing instabilities due to vibrations and air convection. Construction of the UV beam optical system enables appropriate beam shaping and control of its size and position on the cathode, as well as time delay with respect to the IR pulse, i.e. with respect to the plasma wakefield seeder. In this paper, we present the design of the UV beam line and results of its commissioning regarding IR/UV conversion, beam pointing stability, and means of beam control and monitoring., Proceedings of the 10th Int. Particle Accelerator Conf., IPAC2019, Melbourne, Australia
- Published
- 2019
- Full Text
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7. Vicarious value learning by differential outcomes training: A social transfer of control methodology
- Author
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Lowe, Robert, Rittmo, Jonathan, Carlsson, Rickard, and Gander, Pierre
- Published
- 2021
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8. A social differential outcomes learning task: Performance, EEG, and questionnaire data
- Author
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Gander, Pierre, Rittmo, Jonathan, Carlsson, Rickard, and Lowe, Robert
- Published
- 2020
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9. Integration of a Terawatt Laser at the CERN SPS Beam for the AWAKE Experiment on Proton-Driven Plasma Wake Acceleration
- Author
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Fedosseev, Valentin, Battistin, Michele, Chevallay, Eric, Chritin, Nicolas, Clerc, Vincent, Feniet, Thierry, Friebel, Florence, Galleazzi, Frederic, Gander, Pierre, Gschwendtner, Edda, Hansen, Jan, Heßler, Christoph, Martyanov, Mikhail, Masi, Alessandro, Moody, Joshua, Muggli, Patric, Pardons, Ans, Salveter, Friederike, and Szczurek, Krzysztof
- Subjects
Physics::Accelerator Physics ,03 Alternative Particle Sources and Acceleration Techniques ,Physics::Atomic Physics ,Accelerators and Storage Rings ,Accelerator Physics - Abstract
In the AWAKE experiment a high-power laser pulse ionizes rubidium atoms inside a 10 m long vapor cell thus creating a plasma for proton-driven wakefield acceleration of electrons. Propagating co-axial with the SPS proton beam the laser pulse seeds the self-modulation instability within the proton bunch on the front of plasma creation. The same laser will also generate UV-pulses for production of a witness electron beam using an RF-photoinjector. The experimental area formerly occupied by CNGS facility is being modified to accommodate the AWAKE experiment. A completely new laser laboratory was built, taking into account specific considerations related to underground work. The requirements for AWAKE laser installation have been fulfilled and vacuum beam lines for delivery of laser beams to the plasma cell and RF-photoinjector have been constructed. First results of laser beam hardware commissioning tests following the laser installation will be presented., Proceedings of the 7th Int. Particle Accelerator Conf., IPAC2016, Busan, Korea
- Published
- 2016
10. Minimalist social-affective value for use in joint action: A neural-computational hypothesis
- Author
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Lowe, Robert, Almér, Alexander, Lindblad, Gustaf, Gander, Pierre, Michael, John, and Vesper, Cordula
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social value computation ,Joint Action ,Hypothesis and Theory ,joint action ,social Aff-ATP hypothesis ,associative two-process theory ,extended common currency ,emotions ,minimal architectures ,Neuroscience - Abstract
Joint Action is typically described as social interaction that requires coordination among two or more co-actors in order to achieve a common goal. In this article, we put forward a hypothesis for the existence of a neural-computational mechanism of affective valuation that may be critically exploited in Joint Action. Such a mechanism would serve to facilitate coordination between co-actors permitting a reduction of required information. Our hypothesized affective mechanism provides a value function based implementation of Associative Two-Process theory that entails the classification of external stimuli according to outcome expectancies. This approach has been used to describe animal and human action that concerns differential outcome expectancies. Until now it has not been applied to social interaction. We describe our Affective Associative Two-Process (ATP) model as applied to social learning consistent with an ‘extended common currency’ perspective in the social neuroscience literature. We contrast this to an alternative mechanism that provides an example implementation of the so-called social-specific value perspective. In brief, our Social-Affective ATP mechanism builds upon established formalisms for reinforcement learning (temporal difference learning models) nuanced to accommodate expectations (consistent with ATP theory) and extended to integrate non-social and social cues for use in Joint Action.
- Published
- 2016
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11. The Effects of Cinematic Virtual Reality on Viewing Experience and the Recollection of Narrative Elements.
- Author
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Szita, Kata, Gander, Pierre, and Wallstén, David
- Subjects
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VIRTUAL reality , *INFORMATION processing , *EMOTIONS , *CAMERAS , *PARTICIPANT observation - Abstract
Cinematic virtual reality offers 360-degree moving image experiences that engage a viewer's body as its position defines the momentary perspective over the surrounding simulated space. While a 360-degree narrative space has been demonstrated to provide highly immersive experiences, it may also affect information intake and the recollection of narrative events. The present study hypothesizes that the immersive quality of cinematic VR induces a viewer's first-person perspective in observing a narrative in contrast to a camera perspective. A first-person perspective is associated with increase in emotional engagement, sensation of presence, and a more vivid and accurate recollection of information. To determine these effects, we measured viewing experiences, memory characteristics, and recollection accuracy of participants watching an animated movie either using a VR headset or a stationary screen. The comparison revealed that VR viewers experience a higher level of presence in the displayed environment than screen viewers and that their memories of the movie are more vivid, evoke stronger emotions, and are more likely to be recalled from a first-person perspective. Yet, VR participants can recall fewer details than screen viewers. Overall, these results show that while cinematic virtual reality viewing involves more immersive and intense experiences, the 360-degree composition can negatively impact comprehension and recollection. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
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12. The Effect of Forward Testing as a Function of Test Occasions and Study Material.
- Author
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Sohlberg, Robin, Olsson, Fredrik, and Gander, Pierre
- Subjects
RETRIEVAL practice ,MATERIALS testing ,LEARNING strategies - Abstract
It has long been known that one of the most effective study techniques is to be tested on the to-be-remembered material, a phenomenon known as the testing effect. Recent research has also shown that testing of previous materials promotes the learning of new materials, a phenomenon known as the forward testing effect. In this paper, as of yet unexplored aspects of the forward testing effect related to face-name learning are examined; continuous and initial testing are compared to restudying, the effects of an initial test on subsequent learning, and whether an initial change of domain (change from one topic to another) regarding study material affects the robustness of the effect. An experiment (N = 94) was performed according to a 2 (Material: word pairs/face-name pairs in Block 1) × 3 (Test occasions: Blocks 1–4/Blocks 1 and 4/Block 4) complex between-groups design. The results showed that no difference between testing and repetition could be observed regarding the recall of faces and names. The restudy groups incorrectly recalled more names from previous lists in the last interim test compared to the tested groups, which supports the theory that interim tests reduce proactive interference. The results also suggest that the number of test occasions correlates with the number of incorrect recalls from previous lists. These results, in contrast to previous studies, highlight a potential uncertainty about the forward testing effect linked to the robustness of the phenomenon, the specificity in execution, and generalizability. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
13. Memory of Fictional Information: A Theoretical Framework.
- Author
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Gander P, Szita K, Falck A, and Lowe R
- Abstract
Much of the information people encounter in everyday life is not factual; it originates from fictional sources, such as movies, novels, and video games, and from direct experience such as pretense, role-playing, and everyday conversation. Despite the recent increase in research on fiction, there is no theoretical account of how memory of fictional information is related to other types of memory or of which mechanisms allow people to separate fact and fiction in memory. We present a theoretical framework that places memory of fiction in relation to other cognitive phenomena as a distinct construct and argue that it is an essential component for any general theory of human memory. We show how fictionality can be integrated in an existing memory model by extending Rubin's dimensional conceptual memory model. By this means, our model can account for explicit and implicit memory of fictional information of events, places, characters, and objects. Further, we propose a set of mechanisms involving various degrees of complexity and levels of conscious processing that mostly keep fact and fiction separated but also allow information from fiction to influence real-world attitudes and beliefs: content-based reasoning, source monitoring, and an associative link from the memory to the concept of fiction.
- Published
- 2023
- Full Text
- View/download PDF
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