Luciana believes that practice makes perfect. To empirically test her belief, she conducts a study with two conditions. In one condition participants are asked to memorize a list of words after reviewing them only once. In another condition, they are asked to memorize a list of words, but are allowed to review them four times before being tested. If the results of her independent samples t-test revealed: t(50) = 5.07, p = .00, d = .73, what conclusion can she draw?
A) She is correct, practice does lead to better performance.
B) She is incorrect, practice does not lead to better performance.
C) There is no relationship between practice and performance.
D) She is incorrect, practice leads to worse performance.

Question

Quizplus · Accepted Answer

The significant t-value and effect size indicate that there is a statistically significant difference between the two conditions and that practicing by reviewing the list of words four times leads to better performance on the subsequent memory test compared to only reviewing once. Therefore, Luciana's belief that practice makes perfect is supported by the study.

Luciana Believes That Practice Makes Perfect