Personalities of cocaine abusers. Do cocaine abusers have radically different personalities than nonabusing college students? This was one of the questions researched in Psychological Assessment (June 1995). Zuckerman-Kuhlman’s Personality Questionnaire (ZKPQ) was administered to a sample of 450 cocaine abusers and a sample of 589 college students. The ZKPQ yields scores (measured on a 20-point scale) on each of five dimensions: impulsive-sensation seeking, sociability, neuroticism-anxiety, aggression-hostility, and activity. The results are summarized in the accompanying table. Compare the mean ZKPQ scores of the two groups on each dimension, using a statistical test of hypothesis. Interpret the results at α = .01.
Cocaine Abusers (n = 450) | College Students (n = 589) | |||
ZKPQ Dimension | Mean | Std. Dev. | Mean | Std. Dev. |
Impulsive-sensation seeking | 9.4 | 4.4 | 9.5 | 4.4 |
Sociability | 10.4 | 4.3 | 12.5 | 4.0 |
Neuroticism-anxiety | 8.6 | 5.1 | 9.1 | 4.6 |
Aggression-hostility | 8.6 | 3.9 | 7.3 | 4.1 |
Activity | 11.1 | 3.4 | 8.0 | 4.1 |
Source: Ball, S. A. “The validity of an alternative five-factor measure of personality in cocaine abusers.” Psychological Assessment, Vol. 7, No. 2, June 1995, p. 150 (Table 1).
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.