Andrew MarshallAndrew T. Marshall

Advisor: Dr. Kimberly Kirkpatrick

Description of Research

My primary research interest involves the analysis of the roles that global and local factors play in probabilistic decision making from a behavioral, neurological, and computational perspective.  Furthermore, I am interested in the role of temporal and reward processing in impulsive choice behavior.

Publications

MacInnis, M. L. M., Marshall, A. T., Freestone, D. M., & Church, R. M. (2010). A simultaneous temporal processing account of response rate. Behavioural Processes, 84, 506-510.  doi: 10.1016/j.beproc.2009.12.019.

Galtress, T., Marshall, A. T., & Kirkpatrick, K. (2012). Motivation and timing: clues for modeling the reward system, Behavioural Processes, 90, 142-153. doi: 10.1016/j.beproc.2012.02.014.

Marshall, A. T., & Kirkpatrick, K. (2013). The effects of the previous outcome on probabilistic choice in rats. Journal of Experimental Psychology: Animal Behavior Processes, 39, 24-38. doi: 10.1037/a0030765

Brooks, D. I., Ng, K. H., Buss, E. W., Marshall, A. T., Freeman, J. H., & Wasserman, E. A. (2013). Categorization of photographic images by rats using shape-based image dimensions. Journal of Experimental Psychology: Animal Behavior Processes, 39, 85-92. doi: 10.1037/a0030404.

Kirkpatrick, K., Marshall, A. T., Clarke, J., & Cain, M. E. (2013). Environmental rearing effects on impulsivity and reward sensitivity. Behavioral Neuroscience, 127, 712-724. doi: 10.1037/a0034124

Kirkpatrick, K., Marshall, A. T., Smith, A. P., Koci, J., & Park, Y. (2014). Individual differences in impulsive and risky choice: Effects of environmental rearing conditions. Behavioural Brain Research, 269, 115-127. doi: 10.1016/j.bbr.2014.04.024.

Marshall, A. T., Smith, A. P., & Kirkpatrick, K. (2014). Mechanisms of impulsive choice: I. Individual differences in interval timing and reward processing. Journal of the Experimental Analysis of Behavior, 102, 86-101. doi: 10.1002/jeab.88.

Smith, A. P., Marshall, A. T., & Kirkpatrick, K. (in press). Mechanisms of impulsive choice: II. Time-based interventions to improve self-control, Behavioural Processes. doi: 10.1016/j.beproc.2014.10.010

Kirkpatrick, K., Marshall, A. T., & Smith, A. P. (in press). Mechanisms of individual differences in impulsive and risky choice. Comparative Cognition & Behavior Reviews.

Marshall, A. T., & Kirkpatrick, K. (in press). Relative gains, losses, and reference points in probabilistic choice in rats. PLOS ONE.

Presentations

Marshall, A. T., MacInnis, M. L. M., Church, R. M. (May 2009). Precise time cues lead to low response rates in rats.Poster presentation at the 32nd Annual Conference of the Society for the Quantitative Analyses of Behavior (SQAB). Phoenix, AZ. 

Brooks, D., Ng, K., Buss, E., Marshall, A., Freeman, J., & Wasserman, E. (November 2009). Visual discrimination in rats using a touchscreen. Platform presentation at the Fall Meeting of the Comparative Cognition Society. Boston, MA.

Marshall, A., Clarke, J., Crumer, A., Cain, M. E., & Kirkpatrick K. (March 2011). Differential rearing environment effects on impulsive action and impulsive choice in rats. Poster presentation at the 18th Annual International Conference on Comparative Cognition (CO3). Melbourne, FL.

Marshall, A., MacInnis, M. L. M., Freestone, D., & Church, R. M. (May 2011). The effects of stimulus probability and position on simultaneous temporal processing.  Poster presentation at the 34th Annual Conference of the Society for the Quantitative Analyses of Behavior (SQAB). Denver, CO. 

Marshall, A. & Kirkpatrick, K. (November 2011). Probabilistic choice in rats. Platform presentation at the Fall Meeting of the Comparative Cognition Society. Seattle, WA.

Marshall, A. & Kirkpatrick, K. (April 2012). Previous outcome effects on sequential probabilistic choice behavior. Platform presentation at the Oklahoma Kansas Judgment Decision Making (OKJDM) Conference. Manhattan, KS.

Marshall, A. T., & Kirkpatrick, K. (May 2012). Modeling sequential choices in a risky choice task.  Poster presentation at the 35th Annual Conference of the Society for the Quantitative Analyses of Behavior (SQAB). Seattle, WA.

Marshall, A. T., & Kirkpatrick, K. (May 2012). Analysis of interval timing in two discounting procedures.  Invited symposium contribution at the 38th Annual Convention of the Association for Behavior Analysis International (ABAI). Seattle, WA. 

Marshall, A. T., & Kirkpatrick, K. (October 2012). Reward magnitude effects on sequential risky choices in rats. Platform presentation at the Fall Meeting of the Comparative Cognition Society. New Orleans, LA.

Hyder, J., Marshall, A. T., & Kirkpatrick, K. (May 2013). The effects of relative gains and losses on probabilistic choice in rats.  Poster presentation at the 36th Annual Conference of the Society for the Quantitative Analyses of Behavior (SQAB). Minneapolis, MN. 

Marshall, A. T., Galtress, T., & Kirkpatrick, K. (May 2013). Impulsive choice mechanisms: a reductionist approach.  Poster presentation at the 36th Annual Conference of the Society for the Quantitative Analyses of Behavior (SQAB). Minneapolis, MN. 

Kirkpatrick, K., & Marshall, A. T. (October 2013). Differential rearing effects on impulsivity.  Invited symposium contribution at the 7th International Conference of the Association for Behavior Analysis International (ABAI). Mérida, Mexico. 

Marshall, A. T., Hyder, J., & Kirkpatrick, K. (November 2013). Probabilistic choice in rats: the effects of differential losses and alternative outcomes. Platform presentation at the Fall Meeting of the Comparative Cognition Society. Toronto, Canada.

Kirkpatrick, K., & Marshall, A. T. (March 2014). Why is time so powerful? Invited symposium contribution at the 21st Annual International Conference on Comparative Cognition (CO3). Melbourne, FL. 

Fardette, E., & Marshall, A. T.,& Kirkpatrick, K. (March 2014). The effects of certain outcome magnitude on probabilistic choice in rats. Poster presentation at the 21st Annual International Conference on Comparative Cognition (CO3). Melbourne, FL. 

Wang, Z., Marshall, A. T., & Kirkpatrick, K. (March 2014). Environmental rearing effects on behavioral flexibility. Poster presentation at the 21st Annual International Conference on Comparative Cognition (CO3). Melbourne, FL. 

Marshall, A. T. & Kirkpatrick, K. (May 2014). Mechanisms of impulsive choice: reward sensitivity and devaluation.  Poster presentation at the 37th Annual Conference of the Society for the Quantitative Analyses of Behavior (SQAB). Chicago, IL.

Wang, Z, Marshall, A. T., & Kirkpatrick, K. (November 2014). Environmental rearing effects on impulsivity, reward sensitivity, and behavioral flexibility. Poster presentation at the 44th Annual Society for Neuroscience Meeting. Washington, DC.

Teaching Experience

Undergraduate Teaching Assistant

Elementary Psychology: An Introduction to Mind and Behavior
Brown University - Fall 2008

Undergraduate Teaching Assistant

Experimental Analysis of Animal Behavior and Cognition
Brown University - Fall 2009

Co-Instructor

Introduction to MATLAB
Kansas State University – Fall 2013

Instructor

General Psychology
Kansas State University – Spring 2014

Education

B.S. with Honors - Psychology - Brown University, 2010

M. S. – Psychology – Kansas State University, 2013

E-mail: atmarsh@k-state.edu