Abstract
The aim of the present investigation was to know whether the amount of retroactive inhibition depends upon the types of learning or not. As for experimental procedure, paired-associates method was used. Stimulus words were two-syllabled nonsense words, and response words were double figures. The interval between the original learning and the interpolatad learning was 3 minutes and that between the interpolated learning and ralearning was 5 minutes. 28 university students were used as subjects.
In the visual type of learning (V), written stimulus word was presented and subject was requested to give the written reply.
In the auditory type of learning (A), stimulus word was given verbally and subject was requested to give oral reply.
Results were as follows:
1. The amount of retroactive inhibition was much less in the type of learning V (original learning)-A (interpolated learning) than in A-A. However, no significant difference was found between A-A and V-V.
2 Retroactive inhibition was stronger when both original and interpolated learnings were of the auditory type than when they were both visual type.
3. In the A-A or V-V the number of intra-list intrusion in the interpolated learning was less than in the original one, and the opposite relation was found with the number of blanks. In the A-V or V-A, on regularity could be found.
