the process of responding to a part of a situation in the same manner as one has responded to the whole situation, as in the case of a souvenir reminding one of a holiday
redintegration in American English
(rɪˌdɪntəˈgreɪʃən)
noun
1.
a redintegrating or being redintegrated
2. Psychology
the tendency to respond to a later stimulus in the same way as to an earlier complex stimulus of which the later one was a part