Bruce watches a new television program with enthusiasm. He then watches a second, similar program. Bruce later finds it difficult to remember the details of the first program; he finds that details about the second program keep intruding. What has probably occurred?

Retroactive interference

Explanation:

Retroactive interference is a phenomenon that describes the event that occurs in the human memory, in which the recall of older information is hindered by newer information. In retroactive interference, new information that an individual takes in interferes with the recall of older information in the human memory, as a result of competition between both.