Abstract
Seventy rats were divided into three groups (GA, GB, and GC; each group was composed of two sub-groups). GA was subjected to four retests of HEBB-WILLIAMS test (1946 ; T1, T2, T3, and T4) separated by each of one month interval, GB was retested on T1 and T4, and GC was done on T3 and T4 (Table 1). Each S was held in its individual cage from 36 age in days. S was submitted to handling (4 days), familiarization (3 days), pre-training (3 days), general activity test (one trial on the elevated runway without reinforcement on the last day of the pre-training) and HEBB-WILLIAMS test (6 days). On the retest, pre-training, general activity test and the main test were given.
The results were summarized as follows.
1. The findings did not show the effect of facilitation due to maturation (Table 2), but the effect of repetition of test (Table 3).
2. GB did not show any improvement from T1 to T4 in terms of the number of errors (Table 4). This result seems to be attributed to curiosity drive or handling effect.
