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Research
Interests
My
research program has two broad objectives: 1. To examine the influence of social
and motivational factors on cognition, and 2. To examine how learning takes
place in two separate neural systems: an explicit, hypothesis-testing system and
an implicit, procedural learning system. I use primarily category-learning and
decision-making tasks to accomplish these objectives. These types of tasks are
very useful because they allow me to incorporate sophisticated model-based
analysis techniques, and the neurobiological processes involved during learning
are well understood. This allows me to develop and test research questions that
are neurobiologically plausible using sound research methodology. The social
and motivational factors present in our environment greatly influence how we
behave. Currently, I am expanding my research to study special populations and
utilize neuroimaging designs, while moving forward with my behavioral research
using young adults as participants. My research incorporates a wide range of
techniques, and I study several different populations to examine how motivation
affects learning and behavior.
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.
W orthy,
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.
B rez,
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.
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