Long-term effects of preweaning and postweaning free-environment experience on rats' problem-solving behavior

    loading  Checking for direct PDF access through Ovid


Between birth and 21 days of age, 38 rats were raised in maternity cages or in enriched free environments. At 21–50 days of age, 1/2 of each group were in laboratory cages and 1/2 were in free environments. Then all Ss were kept in laboratory cages until Hebb-Williams problem-solving tests began at an average age of 371 days. Both preweaning and postweaning enriched experiences independently improved problem-solving performance. The findings support Hebb's hypothesis that enriched experiences in early life result in permanent brain changes. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

    loading  Loading Related Articles