Critical Periods for the Effects of Infantile Experience on Adult Learning

Science  22 Jan 1960:
Vol. 131, Issue 3395, pp. 227-228
DOI: 10.1126/science.131.3395.227


Mice were shocked with 0.1, 0.3, or 0.5 ma of current at 2 to 3, 8 to 9, or 15 to 16 days. Handled, nonshocked and nonhandled controls were also used. In adulthood each group was split into thirds and taught an avoidance response under shock of 0.3, 0.5, or 0.7 ma. The amount of shock given during infancy and adulthood, and the age at which shock occurred, were all found to have significant effects upon learning.