Subjects performed a classification learning task with two different problems (across different runs), using a "weather prediction" task. In one (probabilistic) problem, the labels were probabilistically related to each set of cards. In another (deterministic) problem, the labels were deterministically related to each set of cards. After learning, subjects participated in an event-related block of judgment only (no feedback) in which they were presented with stimuli from both of the training problems.
Tasks and Conditions: 001 Probabilistic classification task
Investigator Info Investigators: Aron, A.R. Poldrack, R.A. Gluck, M.A. Acknowledgements and Funding: Whitehall Foundation and NSF grant BCS-0223843 to R.A.P. The authors thank Allan J. Tobin and Robert Bilder for helpful discussion and encouragement, Sabrina Tom for scanning and Catherine Myers and Daphna Shohamy for help with task design.
Publications Pubmed Link: Long-term test-retest reliability of fMRI Digital Document: Methods.pdf
Study Metadata Sample Size: 17 Scanner Type: 3 T Siemens Allegra MRI scanner