Final answer:
Episodic memory is used when you remember a movie story because it relates to personal experiences. This side of memory is distinct from semantic memory, which involves general knowledge and facts.
Step-by-step explanation:
When you see a movie and remember the story because it has meaning to you, you are using episodic memory. Episodic memory is a form of long-term memory that involves recollection of specific events, situations, and experiences. Your personal relatedness to the movie's content, its impact on you, and the unique combination of the what, where, and when of the movie-watching experience contribute to the formation of episodic memories. On the other hand, semantic memory refers to memory of facts, concepts, and knowledge that is not tied to personal experiences but is more about general information. The ability to recall and relate the story of a movie to one's personal experiences demonstrates how deep semantic processing, coupled with the self-referencing effect, can provide a stronger memory trace.