Tests of a hybrid-similarity exemplar model of context-dependent memorability in a high-dimensional real-world category domain.

Abstract

We conduct tests of a hybrid-similarity exemplar model on its ability to account for the context-dependent memorability of items embedded in high-dimensional category spaces. According to the model, recognition judgments are based on the summed similarity of test items to studied exemplars. The model allows for the idea that “self-similarity” among objects differs due to matching on highly salient distinctive features. Participants viewed a study list of rock images belonging to geologically defined categories where the number of studied items from each category was manipulated. Following the study, the participants’ old–new recognition memory performance was tested. We also manipulated acro..