People's psychological dissonance is reduced through the selective processes, one of which is the process in which people attend to only those messages that are consistent with their preexisting attitudes and beliefs.

People's psychological dissonance is reduced through the selective processes, one of which is SELECTIVE EXPOSURE, the process in which people attend to only those messages that are consistent with their preexisting attitudes and beliefs.

Explanation:

Within the practice of psychology and, more specifically, the analysis of selective processes, selective exposure describes some individuals' tendency to attend to information that reinforces pre-existing views, beliefs and attitudes rather than contradictory information.

This process involves ignoring the unfavorable information and selecting the favorable information recieved.