Aging and Capacity in the Same-Different Judgment

Autor: Lawrence R. Gottlob
Rok vydání: 2007
Předmět:
Zdroj: Aging, Neuropsychology, and Cognition. 14:55-69
ISSN: 1744-4128
1382-5585
DOI: 10.1080/138255890969528
Popis: The same-different judgment was used in two experiments to investigate age-group differences in visual processing. Two targets next to fixation were presented; the tar­ gets on one-half of the trials were the same, and on the other half of the trials, the tar­ gets differed by color, shape, or color and shape (redundant). Response times were lower for redundant trials than for color-only and shape-only trials; this redundancy 10 gain was greater for older observers than for young observers. Capacity measures based on the integrated hazard functions indicated that young adults, but not older adults, experienced a slowing of processing (reduction of capacity) in the redundant condition. These capacity measures may provide a method for interpreting age-group effects in the presence of overall response-time differences. 15
Databáze: OpenAIRE