In One Experiment an Undergraduate Spent a Year and a Half

Multiple Choice

In one experiment an undergraduate spent a year and a half memorizing lists of numbers and recalling them immediately. By the end of the year, how had his memory changed-if at all?

A) He had increased the capacity of his short-term memory not only for numbers (which he had practiced) but also for letters (which he had not practiced) .
B) He had improved his ability to use chunking to store more numbers in his short-term memory.
C) The capacity of his short-term memory had decreased from seven to five.
D) His ability to memorize had not changed in any way.