Final answer:
In a 50-minute lecture with 3 groups of students, the exercise break group may remember more in terms of immediate and long-term memory, while the no breaks group may have lower levels of memory retention. The non-exercise breaks group may have moderate levels of memory retention.
Step-by-step explanation:
Possible Differences in Immediate and 48-hour Memory
In a 50-minute lecture with 3 groups of students, there may be differences in immediate memory and memory after 48 hours among the groups.
1) Exercise break group: This group may remember more immediately after the lecture and after 48 hours because exercise is known to enhance memory and cognitive function.
2) Non-exercise breaks group: This group may have a moderate level of memory retention both immediately and after 48 hours.
3) No breaks group: This group may have lower levels of memory retention both immediately and after 48 hours because breaks are known to enhance memory consolidation.