Abstract:
People can selectively remember important information when memory is
impaired during aging, distraction or rushing. It is unclear what factors
may impede this ability. We propose that individual differences in the
neural systems responsible for producing habits, which are characterized by
behavioral perseverance without regards to changes in the outcomes of the
behavior, may similarly affect the ability of value to direct future
remembering. To test this relationship, UCLA undergraduates (N = 88)
performed an instrumental learning (IL) task that is known to sort people
by habit or non-habit strategies and a value directed remembering paradigm
in which they studied lists of words ranging in value from 1 to 10 points
while completing a tone-identification task during half of the lists. Half
the participants underwent acute stress induction prior to the memory task.
Participants responded to validated measures of ELS and depression. Habits
during the IL task, the acute stress manipulation, and depression all
predicted impaired selectivity for value during subsequent recall. Results
suggest the reliance on habits may reflect dysfunction of the neural
mechanisms for computing value.