Answer:
The failure of rehearsal in Ricardo's case is most likely due to limitations in short-term memory capacity. Short-term memory can only hold a limited amount of information for a short duration, typically around 7 items plus or minus 2, according to George Miller's famous study. Since Ricardo was given 10 turn-by-turn directions, it's possible that he exceeded the capacity of his short-term memory, leading to forgetting some of the turns despite rehearsal.
Explanation:
When Ricardo's mother gave him a series of 10 turn-by-turn directions, he likely tried to use rehearsal to remember them. However, because there were more than around 7 items to remember, Ricardo's short-term memory may have become overloaded, causing him to forget some of the turns despite his efforts to rehearse them. This demonstrates the limitation of short-term memory capacity, which can result in forgetting information when the amount of information to be remembered exceeds its capacity.
