To explore her hypothesis, Sam designed the following experiment. Two
groups of participants took the musical ability test. Group "A" came back to the
lab every day and practiced memorizing words. Group "B" came back to the lab
every day and read the same lists of words, but did not memorize them. Then
the two groups took the music ability test again. Sam hypothesized that having
to memorize the words would cause people to do better on the music test. In
Sam's experiment:
