Individual Differences in Value-Directed Encoding
Blake Elliott1, Samuel McClure1, Gene Brewer1; 1Arizona State University
The ability to selectively encode important or valuable information is an essential aspect of human memory. Individual differences in this ability may derive from variability in stimulus valuation, memory encoding, or from variability in strategic abilities related to strategy selection and maintenance in working memory. The possibility that individual difference may segregate along these different dimensions is suggested by the fact that the brain reward system consists of multiple parallel networks (e.g. mesolimbic, mesocortical, and mesiotemporal pathways) that converge to support action control. We collected cognitive ability measures reflecting working memory capacity, episodic memory, and value-directed remembering from a large sample of participants (n=230). Individual differences methodology can be used to assess these dimensional contributions to value sensitivity in value-directed remembering tasks. Our results suggest that episodic memory ability, but not working memory capacity, was predictive of value-dependent memory. These results suggest that brain reward networks may be differentially related to value-based memory encoding.
Topic Area: LONG-TERM MEMORY: Episodic