Todd Maddox

 

Darrell A. Worthy 5th Year Graduate Student  Department of Psychology

Research Interests My research in centered on issues in decision-making, categorization, and motivation. I use mathematical modeling to gain a more comprehensive understanding of cognition.    Email:  worthyda@mail.utexas.edu Publications Worthy, D.A., Markman, A.B., & Maddox, W.T. (2009).Choking and Excelling Under Pressure in Experienced Classifiers. Attention, Perception and Psychophysics, 71, 924-935.  [  .pdf  ]   Worthy, D.A., Markman, A.B., & Maddox, W.T. (2009). What is Pressure? Evidence for Social Pressure as a Type of Regulatory Focus. Psychonomic Bulletin and Review, 16, 344-349.  [.pdf  ] Worthy, D.A., Markman, A.B., & Maddox, W.T. (2009). Choking and Excelling at the Free Throw Line. International Journal of Thinking and Problem Solving, 19, 53-58. [  .pdf  ]   Worthy, D.A., Maddox, W.T., & Markman, A.B. (2008). Ratio and Difference Comparisons of Expected Reward in Decision Making Tasks. Memory and Cognition, 36, 1460-1469.  [.pdf ]   Worthy, D.A., Maddox, W.T., & Markman, A.B. (2007). Regulatory Fit Effects in a Choice Task.  Psychonomic Bulletin and Review, 14, 1125-1132. [ .pdf ]   Markman, A.B., Maddox, W.T., Worthy, D.A., & Baldwin, G.C. (2007). Using Regulatory Focus to Explore Implicit and Explicit Processing.  Journal of Consciousness Studies, 14, 132-155.  [.pdf ]   Markman, A.B., Maddox, W.T., & Worthy, D.A. (2006). Choking and Excelling Under Pressure. Psychological Science 17(11), 944-948. [ .pdf ]   Ad-Hoc Reviews Journal of Experimental Psychology: General Psychonomic Bulletin & Review Journal of Applied Sport Psychology Journal of Sport and Exercise Psychology   Peer-Reviewed Conference Proceedings Worthy, D.A., Maddox, W.T., & Markman, A.B. (2009). Less is More: Stimulus-Feedback Co-Occurrence in Perceptual Category Learning, Annual Proceedings of the Cognitive Science Society. [  .pdf  ] Manuscripts Under Review & in Preparation Worthy, D.A., Grimm, L.R., Markman, A.B., & Maddox, W.T. (under review).  Engaging the Approach and Avoidance Motivational Systems: Regulatory Focus, Social Pressure and Stereotype Threat in a Broader Context Worthy, D.A., Maddox, W.T., & Markman, A.B. (in preparation). Feedback Matters:  Effects of Subtle Feedback Manipulations on Dissociable Learning Systems. Worthy, D.A., Pacheco, J., Maddox, W.T., & Schnyer, D.M., (in preparation).  Effects of Aging on Exploration and Exploitation in Choice Tasks Maddox, W.T., Worthy, D.A., & Filoteo, J.V. (under review).  "Desirable Difficulties": Retention and Generalization in Information-Integration Classification.   Brez, C.C., Worthy, D.A., Markman, A.B., & Maddox, W.T. (in preparation).  Motivational Influences on Cognitive Performance in Children.  Worthy, D.A., Maddox, W.T., & Markman, A.B. (in preparation). The Exploration/Exploitation Dilemma: A Comparison of Simple Learning Models.    Worthy, D.A., Maddox, W.T., & Markman, A.B. (in preparation).  Contrasting Effects of Internally and Externally Derived Goals:  Implications for Educational Practices. Worthy, D.A., Markman, A.B., & Maddox, W.T. (in preparation).  Effects of Positive and Negative Affect on Decision-Making: Implications for Regulatory Focus Theory.        Worthy, D.A., Maddox, W.T., & Markman, A.B. (in preparation).  The Length of Feedback Interval and Inter-Trial Interval Effects Decision-Making in Choice Tasks.         Talks Worthy, D.A., Maddox, W.T., & Markman, A.B.  (2009) Feedback Matters.  Effects of Feedback Properties on Category Learning.  Talk Presented at the Annual Meeting of the Cognitive Science Society, Amsterdam, NL.   [.pdf ] Worthy, D.A., Maddox, W.T., & Markman, A.B.  (2009) Feedback Matters.  Effects of Feedback Properties on Category Learning.  Talk Presented at Cognitive Area Seminar, University of Texas at Austin, Department of Psychology, February 20, 2009.   [.pdf ] Worthy, D.A., (2008) Processing Expected Reward in Decision-Making Tasks. Talk presented at University of Texas Cognition and Perception Area Seminar.  March 21, 2008. Austin, TX.  [.pdf ] Worthy, D.A., Choking and Excelling Under Pressure in Novices and Experts.  Talk presented at University of Texas Cognition and Perception Area Seminar.  November 10, 2006. Austin, TX. [ .pdf] Poster Presentations Worthy, D.A., Pacheco, J., Schnyer, D.M., & Maddox, W.T. (2009) Effects of Aging on Maximizing Rewards and Minimizing Losses in a Choice Task.  Poster presented at the Annual Convention of the Cognitive Neuroscience Society, San Francisco, CA, March, 2009. [.pdf ] Worthy, D.A., Maddox, W.T., & Markman (2008) What is Pressure? Evidence for Social Pressure as a Type of Regulatory Focus.  Poster presented at 48th Annual Meeting of the Psychonomic Society, Chicago, IL, November, 2008. [.pdf ]   Worthy, D.A.,  Markman, A.B., & Maddox, W.T. (2008) Lengthening Feedback Intervals Increases Exploitation in Choice Tasks. Poster presented at the Annual Meeting of the Society for Neuroeconomics, Park City, UT, September, 2008. [.pdf ]    Worthy, D.A., Maddox, W.T., & Markman, A.B. (2008). Are Reward Expectancies in Choice Tasks Processed as Ratios or Differences?: Implications for Theories of Reward Processing in the Orbitofrontal Cortex (OFC). Poster presented at the 15th Annual Cognitive Neuroscience Society Convention, San Francisco, CA, April, 2008.  [.pdf ]     Worthy, D.A., Maddox, W.T., & Markman, A.B. (2007). Regulatory Fit Effects in a Gambling Task.  Poster presented at the 48th Annual Meeting of the Psychonomic Society, Long Beach, CA, November, 2007. [.pdf ] Worthy, D.A., Maddox, W.T., & Markman, A.B. (2007). Regulatory Fit Effects in a Gambling Task.  Poster presented at the Annual Meeting of the Society for Neuroeconomics, Hull, MA, September, 2007. [.pdf ] Worthy, D.A., Filoteo, J.V., & Maddox, W.T.  (2007).  Consolidation and Retention in Procedural-Based Categorization. Poster presented at the Annual Meeting of the Cognitive Neuroscience Society, New York City, NY, May, 2007.  [.pdf ] Worthy, D.A., Maddox, W.T., & Markman, A.B.  (2007).  Dissociable Effects of Social Pressure on Frontal- and Striatal-Mediated Classification Learning: Choking and Excelling Under Pressure. Poster Presentation. Neural Systems of Social Behavior Conference.  May 12, 2007.  Austin, TX. [.pdf ] Worthy, D.A., Maddox, W.T., & Markman, A.B. (2006). Choking and Excelling Under Pressure in Novices and Experts.  Poster Presentation.  45th Annual Meeting of the Psychonomic Society. November 17, 2006.  Houston, TX.  [ .pdf ] Worthy, D.A., (2006) Choking and Excelling Under Pressure in Novices and Experts.  Talk presented at University of Texas Cognition and Perception Area Seminar.  November 10, 2006. Austin, TX. [ .pdf ]   Bink, M. L., Clark, M., Dailey, S. B., & Worthy, D.A. (2004)  Prospective Memory Depends on Cue-Action Contingencies.  Talk presented at 45th Annual Meeting of the Psychonomic Society. November 18, 2004. Minneapolis, MN.