Final answer:
Jason likely could not remember the names of the middle teammates due to the serial position effect, specifically the primacy and recency effects.
Step-by-step explanation:
The reason Jason could not remember the names of the middle teammates is likely due to the serial position effect. According to this effect, people tend to remember the first and last items in a list more easily than the items in the middle.
In the context of the basketball team, Jason's memory was more focused on the beginning and the end of the introduction, so he was able to remember the first and last teammates. However, the middle teammates were not as strongly encoded into his memory, resulting in difficulty remembering their names.
This phenomenon can be attributed to primacy and recency effects. The first teammate's name was more likely to be transferred to long-term memory due to the primacy effect, while the last teammate's name was still fresh in Jason's working memory because of the recency effect.