One hundred and sixty undergraduates (80 male and 80 female) were randomly selected as Ss and divided into two experimental groups, i.e., `S-Group' (Satiation group) and `F-Group' (Fatigue group). Ss of S-Group held the I-block between thumb and index finger of their hands. S's hand was static and such arrangement was made so that I-block was moving up and down rubbing both the fingers of S at a speed of one rubbing per sec., but Ss of F-Group rubbed their fingers against the I-block by moving their hands up and down at a rate of one rubbing per second. Four I-durations, 15, 30, 45 and 60 sec. were used and 20 Ss (10 male and 10 female) from both the groups received the I-block for any of the above-mentioned periods. Sixteen pre-experimental and 16 experimental judgments obtained by both the groups were averaged and then analysed by using t test and following results were obtained:
(a) KFAE (Kinesthetic figural after effect) phenomenon is observable only among the Ss of `F-Group' and not among S-Group, (b) Sex of Ss affect the magnitude of KFAE and (c) I-durations are found as a significant factor. These results were interpreted in the framework of Bull's reactive inhibition.