Final answer:
The individual is most likely suffering from Anterograde Amnesia, which is the inability to form new memories after a certain event. They can still recall childhood memories in great detail, but cannot remember meeting a new friend shortly after being introduced.
Step-by-step explanation:
Anterograde Amnesia
Based on the symptoms described, the individual is most likely suffering from Anterograde Amnesia. This condition is characterized by the inability to form new memories after a certain event, such as being introduced to a new friend. However, the person can still recall information from their childhood in great detail. The memory impairment is specifically related to creating new memories.
Learn more about Amnesia