The development of children's strategies for selective attention: evidence for a transitional period.

Previous research suggests a developmental lag between producing a strategy of selective attention and benefiting from it. This aspect of the transitional period during strategy acquisition was investigated in the present study by comparing recall following child-produced (Session 1) and experimenter-produced (Session 2) strategies. The 114 7-9-year-olds were told to remember a subset of 6 items (either animals or household) located beneath 2 rows of doors. Session 1 assessed each child's spontaneous strategy (pattern of opening doors) over 6 trials. Session 2 included 7 different trial types, during which the experimenter opened the doors, thereby equating the strategies for children of all ages. The results revealed gradual changes in children's ability both to produce and to benefit from a selective strategy. Whereas younger children performed differently on trial types during which only the 6 relevant versus all 12 items were shown, older children recalled a similar number of items for all trial types, regardless of the number or pattern of door openings provided. Adult-produced selectivity eliminated recall differences among the grades and suggested that strategy production is effortful for younger children and therefore may prevent their benefiting from the strategy.