Lipreading, processing speed, and working memory in younger and older adults.

Purpose: To examine several cognitive and perceptual abilities--including working memory (WM), information processing speed (PS), perceptual closure, and perceptual disembedding skill--as factors contributing to individual differences in lipreading performance and to examine how patterns in predictor variables change across age groups.

Method: Forty-three younger adults (mean age = 20.8 years, SD = 2.