Effects of type of prompt on the use of external strategies were examined. Participants were 7-, 9-, 11-, and 17-year-old children without mental retardation and 11- and 17-year-old children with mental retardation (N = 272). They were given a task requiring memory for object placement and assigned to one of four conditions: no prompt, verbal prompt, physical prompt, verbal and physical prompt. In the physical and verbal prompt condition, 17-year-old children with mental retardation used strategies at the same rate as 17-year-old children without mental retardation. Eleven-year-old children with mental retardation used similar types of strategies as the 7-year-old children without mental retardation. Thus, strategy use of older children with mental retardation may be activated to the same level of children without mental retardation with prompts.
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