Assumptions behind scoring source versus item memory: Effects of age, hippocampal lesions and mild memory problems.

ABSTRACT: Source monitoring paradigms have been used to separate: 1) the probability of recognising an item (Item memory) and 2) the probability of remembering the context in which that item was previously encountered (Source memory), conditional on it being recognised. Multinomial Processing Tree (MPT) models are an effective way to estimate these conditional probabilities. Moreover, MPTs make explicit the assumptions behind different ways to parameterise Item and Source memory. Using data from six independent groups across two different paradigms, we show that one would draw different conclusions about the effects of age, age-related memory problems and hippocampal lesions on Item and Source memory, depending on the use of: 1) standard accuracy calculation vs MPT analysis, and 2) two different MPT

SUBMITTER: Cooper E 

PROVIDER: S-EPMC5460522 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature