Dr. Delmonte develops a questionnaire to assess the personality trait of impulsivity among adults. In a journal article, she presents evidence that college students tend to get essentially the same score if they take the test twice, 2 months apart. However, when a reviewer examines the sample questionnaire items included in the article, it seems that they relate more to whether a person is sociable, outgoing, and fun-loving than to whether an individual is impulsive. Dr. Delmonte's questionnaire may lack:

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The questionnaire may lack validity because it may not actually be measuring impulsivity, as evidenced by the sample questionnaire items relating more to sociability, outgoingness, and fun-lovingness. Test-retest reliability is not the main issue since the scores are essentially the same when taken twice 2 months apart. Objectivity and interrater reliability also do not seem to be at play in this situation.

Dr Delmonte Develops a Questionnaire to Assess the Personality Trait