Tom wanted to assess the reliability of his measure of anxiety so he had a group of introductory psychology students complete the measure of anxiety on March 3^rd and again on March 25^th. He then compared the scores that the students made on the two testing occasions using a statistical technique called correlation. He used this quantitative index as his measure of reliability. Tom used what method to assess reliability? A) test-retest B) equivalent forms C) split-half D) Cronbach's alpha

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Tom used the test-retest method to assess reliability by having the same group of students complete the measure of anxiety at two different times and then comparing the scores from the two occasions using correlation.

Tom Wanted to Assess the Reliability of His Measure of Anxiety