Pattern rate and interpattern interval in development of matching simple auditory-visual patterns

Assessed the possibility that previous failures to find evidence of more rapid inter- than intramodal development of matching of simple auditory and visual patterns have occurred because of the exclusive use of slow patterns and short interpattern intervals. In Exp I 32 1st- and 32 3rd-grade boys were compared in inter- and intramodal matching of fast or slow spatiotemporal patterns with long or short interpattern intervals. In Exp II the same comparisons were made for 32 2nd- and 32 4th-grade boys using temporal patterns. In both studies modality was a within-Ss variable, whereas age, pattern rate, and interpattern interval were between-Ss variables. Results indicate that in Exp I 3 separate indices of sensitivity coincided in indicating a significant effect of pattern rate but not of interpattern interval. The more rapid development of inter- than of intramodal matching for fast but not for slow patterns provided support for the hypothesis that auditory-visual integration increases with age at least in boys. In Exp II there was no indication of differential inter- and intramodal development under any condition. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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