Ph.D., University of Texas, Austin (2010)
Area: Cognition& Cognitive Neuroscience
Member: Institute for Neuroscience
287 Psychology Building
CV | Web | Scholar | Research Gate | Statistical Resources
I most actively update my personal/lab academic webpage here.
You will find recent papers and stats resources
You can also see my older webpage here.
PSYC 203: Elementary Statistics for Psychology
PSYC 204: Experimental Psychology
PSYC 345: Cognitive Psychology
PSYC 607: Experimental Psychology (Inferential Statistics)
PSYC 671: Experimental Design for Behavioral Scientists (Regression)
PSYC 689: Decision-Making Seminar (Spring 2012)
Short course on Bayesian Statistics (May 23-24, 2017)
Key words that describe work we have done or are currently conducting in the lab: Reinforcement learning, Decision-making, Categorization, Associative learning, Aging and cognition, Mathematical modeling, fMRI, Substance abuse, disinhibition, depression, Choking under pressure, Personality, Dopamine, Spontaneuous eye-blink rate, Gambling tasks, Bayesian statistics.
Dr. Worthy’s research uses behavioral methods, computational modeling, and neuroscience methods to examine the topics listed above. One broad focus of our research is to develop formal mathematical models of cognitive processes such as learning or decision-making that lead to testable predictions using behavioral or fMRI experiments. This line of work examines issues relevant to the fields of Cognition and Cognitive Neuroscience with the goal of fully understanding how and why people think and behave the way they do in different situations.
A second line of research utilizes cognition and cognitive neuroscience methods to examine individual differences in cognitive processes such as learning and decision-making. For example, how do clinical issues like depression or substance abuse affect the way people respond to rewards or punishments? Or, how does gender or aging affect decision-making? This line of work seeks to bridge gaps across sub-disciplines in psychology by applying cognitive neuroscience methods to questions traditionally examined by researchers in other fields.
- Principal Investigator (Co-PI: David M. Schnyer). NIMH R01, PAR-11-337; Total Direct Costs: $1,442,313. Impact Score: 20; Percentile: 6th. A Computational Neuroscience Approach to Frontal Compensation in Decision-Making (2014-2018).
RECENT AND SELECT PUBLICATIONS
For a full publication list and access to reprints please see my lab’s webpage
Pang, B., Blanco, N.J., Maddox, W.T., & Worthy, D.A. (2017). To Not Settle for Small Losses: Evidence for an Ecological Aspiration Level of Zero in Dynamic Decision-Making. Psychonomic Bulletin and Review, 24(2), 536-546.
Byrne, K.A., & Worthy, D.A. (2016). Toward a Mechanistic Account of Gender Differences in Reward-Based Decision-Making. Journal of Neuroscience, Psychology, and Economics, 9, 157-168.
Byrne, K.A.*, Davis, T., & Worthy, D.A. (2016). Dopaminergic genetic polymorphisms predict rule-based category-learning. Journal of Cognitive Neuroscience, 28, 959-970. (5-Year Impact Factor: 5.705).
Worthy, D.A., Davis, T., Gorlick, M.A., Cooper, J.A., Bakkour, A., Mumford, J., Poldrack, R.A., & Maddox, W.T. (2016). Neural correlates of state-based decision-making in younger and older adults. Neuroimage, 130, 13-23.
Byrne, K.A.*, Patrick, C.J., & Worthy, D.A. (2016). Striatal dopamine, externalizing proneness, and substance abuse. Effects of wanting and learning during reward-based decision-making. Clinical Psychological Science, 4, 760-774.
Byrne, K.A.*, Norris, D.D.**, & Worthy, D.A. (2016). Dopamine, depressive symptoms, and decision-making: The relationship between spontaneous eyeblink rate, and depressive symptoms predicts Iowa Gambling Task performance. Cognitive, Affective, and Behavioral Neuroscience, 16, 23-36. (5-Year Impact Factor: 4.319). *Awarded Best Article in Cognitive, Affective, and Behavioral Neuroscience for 2016.
Byrne, K.A.*, Tibbett, T.P., Carter-Sowell, A.R., Laserna, L.N.**, & Worthy, D.A. (2016). Ostracism reduces reliance on poor advice from others during decision-making. Journal of Behavioral Decision Making, 29, 409-418.
Byrne, K.*, Silasi-Mansat, C.*, & Worthy, D.A. (2015). Who chokes under pressure? The big five personality traits and decision-making under pressure. Personality and Individual Differences, 74, 22-28.
Gorlick, M.A., Worthy, D.A., Kopnik, V.S., McGeary, J.E., Beevers, C.G., & Maddox, W.T. (2015). DRD4 7 repeat carriers show enhanced attention to high-priority items in the environment. Journal of Cognitive Neuroscience, 27, 509-521. (5-Year Impact Factor: 5.705. Equal contribution from the first two authors).
Worthy, D.A., Otto A.R., Doll, B.B., Byrne, K.A.*, & Maddox, W.T. (2015). Older adults are highly responsive to recent events during decision-making. Decision, 2, 27-38. (5-Year Impact Factor Not Yet Available; Decision is a new APA journal).
Pang, B.*, Otto, A.R., & Worthy, D.A. (2015). Self-control moderates decision-making behavior when minimizing losses versus maximizing gains. Journal of Behavioral Decision-Making, 28, 176-187.
Byrne, K.A.*, & Worthy, D.A. (2015). Gender differences in reward sensitivity and information processing during decision-making. Journal of Risk and Uncertainty, 50, 55-71 (5-Year Impact Factor: 2.185).
Samanez-Larkin, G.R., Worthy, D.A., Mata, R., McClure, S.M., & Knutson, B. (2014). Adult age differences in frontostriatal representation of prediction error but not reward outcome. Cognitive, Affective, & Behavioral Neuroscience, 14, 672-682. (5-Year Impact Factor: 4.319).
Worthy, D.A. & Byrne, K.A,* & Fields, S. (2014). Effects of emotion on prospection during decision-making. Frontiers in Psychology, 5:591. (5-Year Impact Factor: 2.869).
Worthy, D.A., Cooper, J.A.*, Byrne, K.A.*, Gorlick, M.A., & Maddox, W.T. (2014). State-based versus reward-based motivation in younger and older adults. Cognitive, Affective, & Behavioral Neuroscience, 14, 1208-1220.
Worthy, D.A., & Maddox, W.T. (2014). A Comparison Model of Reinforcement-Learning and Win-Stay-Lose-Shift Decision-Making Processes: A Tribute to W.K. Estes. Journal of Mathematical Psychology. (Special issue honoring W.K. Estes).
Worthy, D.A., Pang, B.*, & Byrne, K.A.* (2013). Decomposing the roles of perseveration and expected value representation in models of the Iowa Gambling Task. Frontiers in Human Neuroscience, 4:640 (Special Topic – IGT: 20 Years After).
Byrne, K.*, & Worthy, D.A. (2013). Do narcissists make better decisions? An investigation of narcissism and dynamic decision-making performance. Personality and Individual Differences, 55, 112-117.
Worthy, D.A., Markman, A.B., & Maddox, W.T. (2013). Feedback timing and stimulus offset effects in perceptual category learning. Brain and Cognition, 81, 283-293.
Maddox, W.T., Gorlick, M.A., Worthy, D.A., & Beevers, C.G. (2012). Depressive symptoms enhance loss-minimization but attenuate gain-maximization in history-dependent decision-making. Cognition, 125, 118-124.
Worthy, D.A., Otto, A.R., & Maddox, W.T. (2012). Working-Memory Load and Temporal Myopia in Dynamic Decision-Making. Journal of Experimental Psychology: Learning, Memory, & Cognition, 38, 1640-1658.
Worthy, D.A., Gorlick, M.A., Pacheco, J.L., Schnyer, D.M., & Maddox, W.T. (2011). With Age Comes Wisdom: Decision-Making in Younger and Older Adults. Psychological Science, 22, 1375-1380.
Worthy, D.A., Maddox, W.T., & Markman, A.B. (2007). Regulatory Fit Effects in a Choice Task. Psychonomic Bulletin and Review, 14, 1125-1132.
Markman, A.B., Maddox, W.T., & Worthy, D.A. (2006). Choking and Excelling Under Pressure. Psychological Science 17(11), 944-948.