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Clinical Science Brown Bag Series: Cecilia Mo
September 30, 2014

Cecilia Mo, Political Science Department, Vanderbilt University

12:10 p.m. Room 316, Wilson Hall 

Why do Asian Americans identify as Democrats? Testing theories of social exclusion and intergroup solidarity.

Asian Americans are overwhelmingly likely to identify as Democrats. This is surprising given that income and voting for the Republican Party are highly correlated, and Asians are the most affluent ethnic group in the United States. We focus on two explanations to address this puzzle: Social exclusion and intergroup solidarity.

Social exclusion arises from Asian Americans' perceptions that they are viewed as less "American", and associate these feelings with the Republican Party. Additionally, Asian Americans exhibit intergroup solidarity; they believe they have common interests with other ethnic minorities that already support the Democratic Party. As a result, Asian Americans align themselves politically with these groups rather than whites. Using a large-scale representative survey and two experimental studies, we found empirical support for both hypotheses. Our findings speak to identity-oriented explanations of political behavior in American electoral politics, as well as conceptions of political parties as coalitions of groups based upon social identity.


CCN Brown Bag Series: David Ross
October 1, 2014

The Cognition and Cognitive Neuroscience (CCN) program presents David Ross, Department of Psychology, Vanderbilt University

12:10 p.m. 115 Wilson Hall

Norm-Based versus Exemplar-Based Models of Face Recognition

Face space models have long provided a unifying framework for understanding face recognition. For more than a decade, findings from face adaptation experiments have been taken as support for a version of face space in which faces are represented with respect to a prototype face, referred to as the norm. The consensus in the literature is also that these findings rule out alternative exemplar-based models. None of these claims have ever been supported by testing predictions of computational models of face recognition. I will first review our recent work where we formalized and tested norm-based and exemplar-based models on a range of purportedly diagnostic face adaptation paradigms. Despite the strong claims that have been made on the basis of these paradigms, we found that the predictions of norm and exemplar models were essentially indistinguishable. I will also discuss new work that may provide some tentative evidence in favor of the exemplar-based account.


Neuroscience Seminar: Justin Siemann
October 2, 2014

Justin Siemann, Vanderbilt Brain Institute (Wallace Lab), Vanderbilt School of Medicine

12:10 p.m. Room 316, Wilson Hall

Studies of multisensory function in the mouse model: circuit and disease implications

This presentation will focus on studies to develop and implement behavioral tests that assess sensory and multisensory function in the mouse model, and to utilize these tests to characterize (multi)sensory function in a mouse model of autism. The work represents the first of its kind to systematically examine sensory and multisensory function in mice. These studies are focused on identifying potential underlying mechanisms and circuits involved in multisensory processing in a mouse. This evaluation will be of value to those interested in studying the neural bases of multisensory function, as it will allow the application of powerful genetic, pharmacologic and optogenetic tools to questions of mechanistic relevance. The strongly translational aspects of the research will allow the application of these tools to a well-established mouse model of autism developed here at Vanderbilt. If, as hypothesized, multisensory deficits are seen in these mice, these studies will provide fundamental insights into the nature of sensory and multisensory dysfunction in autism and serve as an essential foundation for future work aimed at better characterizing the neural underpinnings of these deficits and their links to behavior.


Quantitative Methods Colloquium Series: Andrew F. Hayes
October 3, 2014

Within-subjects mediation analysis: A path-analytic framework

Dr. Andrew F. Hayes, Department of Psychology, The Ohio State University

This talk places the method described by Judd, Kenny, and McClelland (2001, Psychological Methods) for mediation analysis in simple two-condition within-subjects designs in a traditional path analytic framework. Unlike in Judd et al., this framework places interpretive focus regarding mediation on the indirect effect, descriptively and inferentially, as a product of effects. A simple extensions to multiple mediator models is provided, as is implementation in Mplus and the PROCESS macro for SPSS and SAS.

Professional Development Workshop: 'Applying, Interviewing, and Negotiating Jobs in Academia'
October 3, 2014

Professional Development Workshop for Graduate Students and Postdoctoral Fellows in Psychological Sciences and Neuroscience: "Applying, Interviewing, and Negotiating Jobs in Academia"

A panel of psychology and neuroscience faculty will discuss and answer questions about the academic job search process in psychology and neuroscience. The focus will be on demystifying the application, interview, and negotiation process. We will discuss postdoctoral fellowships in psychology and neuroscience as well as faculty positions at a range of academic institutions and medical centers. We will also answer questions about the early years as a faculty member.

4-6 p.m. Room 115, Wilson Hall


Clinical Science Brown Bag Series: AJ Heritage
October 7, 2014

AJ Heritage, Department of Psychology, Vanderbilt University

12:10 p.m. Room 316, Wilson Hall

Title and abstract TBA

Quantitative Methods Colloquium Series: Analysis and interpretation of circumplex data
October 7, 2014

Analysis and interpretation of circumplex data

Michael W. Browne, Quantitative Psychology, The Ohio State University Department of Psychology

Abstract: Circumplex models have frequently been used in the study of measures of affect. A circumplex correlation structure represents the correlation between each pair of variables as a function of the distance between two points on the circumference of a circle. In this talk the interpretation of the circumplex correlation structure will be considered and the comparison of two different circumplexes by projecting one onto the other will be discussed. A data model that yields a cosine-based score profile for each person by locating person points on the same circle as the variable points will also be provided. Illustrative examples will be discussed.

CCN Brown Bag Series: Rob Reinhart
October 8, 2014

Rob Reinhart, Department of Psychology (Schall & Woodman Labs), Vanderbilt University

Wednesday, October 8th 2014

12:10 PM

WH 115

Electrical stimulation repairs executive dysfunction in schizophrenia

Approximately 25 million people worldwide suffer from schizophrenia, yet current knowledge of the illness and conventional treatment options are limited. Here we show that noninvasive electrical brain stimulation can effectively reduce some of the executive control deficits in schizophrenia. We found that transcranial direct-current stimulation over the medial-frontal cortex increased neural activity related to error processing in schizophrenia patients, which is characteristically reduced or absent in the illness. Second, this manipulation of medial-frontal activity caused improvements in a number of behavioral metrics of adaptive control, including task accuracy, the corrective behavior following an error, and learning rates. Third, the electrophysiology and behavior related to executive functioning in schizophrenia patients after stimulation were quantitatively indistinguishable from that of healthy participants. These results suggest an approach for remediating disrupted reward prediction error dopamine related signaling in schizophrenia. These results may have direct application to future intervention therapy development for patients with psychiatric illnesses.

Neuroscience Seminar: Josh Cosman
October 9, 2014

Josh Cosman, Department of Psychology, Vanderbilt University

12:10 p.m. Room 316, Wilson Hall

Title and abstract TBA

Clinical Science Brown Bag Series
October 14, 2014

Speaker to be announced

12:10 p.m. Room 316, Wilson Hall

WH 316

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