Repetition inhibition and facilitation effects for visual-verbal stimuli under conditions of concurrent articulation.

Abstract

The present study examines the effects of within-sequence repetitions for visually presented consonants under conditions of quiet and concurrent articulation (CA). In an immediate serial recall (ISR) procedure, participants wrote down the 6-consonants in the order of original presentation. CA reduced serial recall and abolished the phonological similarity effect.However, the effects of within-trial repetitions were broadly similar under quiet and CA.Specifically, adjacent repetitions facilitated recall of the repeated item, whereas spaced repetitions (separated by 3-intervening items) impaired recall accuracy for the repeated item(i.e. the Ranschburg effect). These data are the first to demonstrate the Ranschburg effect for visual-verbal stimuli under CA.