Abstract: Albino rats were divided into 3 groups at 25 days of age. and were reared in three different enviroments for a certain time. Three group animals returned to normal rearing enviroment and beganto learn Dark Box Avoidance model (DBA model) at 80 days of age. Thelearning period was 15 days. Total experiment rats were 49. Results indicated that the first group (group of nondifferential reinfor-cement light compartment) learned DBA model more rapidly than thecontrol. The second group (group of nondifferential reinforcement darkcompartment) learned more slowly than the control. It showed that earlynondifferential reinforcement light (or dark) enviroment had transfer effecton learning DBA model of albino rats.

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