By comparing the similarity of a subject's scores with individualized chance scores, a test can be validly evaluated for carelessness. A fixed individualized chance score on any scale for a subject can be estimated with the subject's total percentage of true responses. A sum of D2/100 is then determined between the actual and chance scores. The method is regarded as generally applicable to tests which have many scales. Using the Social Experience Questionnaire 100% of random tests and 3.7% of actual tests for normals (N = 54), alcoholics (N = 53), and opiate addicts (N = 28) had cutting scores of 40 or less.
HaertzenC. A.HillH. E.Assessing subjective effects of drugs, an index of carelessness and confusion for use with the Addiction Research Center Inventory (ARCI). Journal of Clinical Psychology, 1963, 19, 407–412.
3.
MartinW. R.HewettB. B.BakerA. J.HaertzenC. A.Aspects of the psychopathology and pathophysiology of addiction. Drug and Alcohol Dependence, 1977, 2, 185–202.
4.
MegargeeE. I.The California Psychological Inventory handbook. San Francisco: Jossey-Bass, 1972.
