Abstract
It has been suggested that unmasked repetition priming is composed of distinct long-and short-term priming components. The current study sought to clarify the relationship between these components by examining the relationship between them. A total of 60 people (45 females, 15 males) participated in a computer-based lexical decision task designed to measure levels of short-term priming across different levels of long-term priming. The results revealed an interdependent relationship between the two components, whereby an increase in long-term priming prompted a decrease in short-term priming. Both long-term and short-term priming were accurately captured by a single power function over seven minutes post repetition, suggesting the two components may draw on the same resources. This interdependence between long- and short-term priming may serve to improve fluency in reading.
Highlights
When a word is recognised the brain is primed in preparation for interacting with that same word more efficiently should they appear again in future [1]
The decay rate of repetition priming found in experiment 1 of McKone [6] was accurately captured by an exponential function (P = 93.5e-0.63 L + 49.1, where P equals the amount of priming in milliseconds and L represents the number of intervening items)
McKone and Dennis [11] dissociated the long- and short-term components in unmasked repetition priming by demonstrating that the slower decay of words than non-words in long-term priming was evident in stimuli presented both visually and aurally
Summary
When a word is recognised the brain is primed in preparation for interacting with that same word more efficiently should they appear again in future [1]. McKone and Dennis [11] dissociated the long- and short-term components in unmasked repetition priming by demonstrating that the slower decay of words than non-words in long-term priming was evident in stimuli presented both visually and aurally. McKone and Dennis [11] suggest this reflects differing needs of the orthographic and phonological systems, whereby aurally-presented non-words remain primed for longer out of a need to treat spoken nonwords as potential words Whilst these studies provide support for the existence of separate long- and short-term components in unmasked repetition priming, the extent to which the two components draw on separate or shared resources is still relatively unclear. The current study examined whether or not shortterm priming differs under varying levels of long-term priming
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