Interactions Between Modality of Working Memory Load and Perceptual Load in Distractor Processing.
The present study investigated interactions between working memory load and perceptual load. The load theory (Lavie, Hirst, de Fockert, & Viding, 2004 ) claims that perceptual load decreases distractor interference, whereas working memory load increases interference. However, recent studies showed that effects of working memory might depend on the relationship between modalities of working memory and task stimuli. Here, we examined whether the relationship between working memory load and perceptual load would remain the same across modalities. The results of Experiment 1 showed that verbal working memory load did not affect a compatibility effect for low perceptual load, whereas it increased the compatibility effect for high perceptual load. In Experiment 2, the compatibility effect remained the same regardless of visual working memory load. These results suggest that the effects of working memory load and perceptual load depend on the relationship between the modalities of working memory and stimuli.
a California State University, San Bernardino.
Hideya
H
Koshino
Pilar
P
Olid
D001288:Attention; D006801:Humans; D008570:Memory, Short-Term; D010465:Perception; D010775:Photic Stimulation; D011930:Reaction Time; D013647:Task Performance and Analysis
distractor interference; perceptual load; visual search; working memory load