Abstract
The aim of the present research was to determine if age differences in processing time reflected (a) changes that are specific to particular processing tasks or (b) global change in speed of processing. To distinguish these explanations, 7 to 19 year olds were administered measures of choice reaction time, letter matching and sentence-figure matching. Results showed that the 7 to 17 year olds' response times (RTs) increased linearly as a function of young adults' RTs in sentence-figure matching performance, which developmental change was described well by exponential functions with a common rate of change, but not better in letter matching. With age increase there were different speeds of processing in different tasks. The choice reaction time and letter matching time decreased rapidly, but sentence-figure matching time decreased slowly.
| Keywords: | child, adolescence, information process speed, developmental function. |
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