Uncle Charlie loves to tell family stories. His nephews observe that these stories evolve over time, but they enjoy hearing them because Charlie is a great storyteller. This is an example of how memory fosters intimacy and creates social bonds.

Autobiographical memory

Explanation:

The person who has highly superior autobiographical memory has more chances to recall the memory with more accuracy, details and with the experience that occurs daily. People test the consistency of memory. This memory is a combination of episodic and semantic memory. It is also called explicit memory.  

Thus here in the above uncle, Charlie loves to tell the stories. Charlie tells the story that evolves previous time but he was a great storyteller. so that it is very interesting to hear it because of autobiographical memory.