Purpose: Designed as a brief mental health screening device.
Population: Ages 16 and over.
Score: Five scores.
Time: (15) minutes.
Author: Richard Lanyon.
Publisher: Research Psychologists Press, Inc.
Description: The Psychological Screening Inventory (PSI) is a 130-item, true-false, self-report questionnaire designed as a screening device "to be used in detecting persons who might profitably receive more intensive attention". It not intended to be a diagnostic instrument but to detect people over the age of 16 who should be referred for more extensive examination or therapy. The PSI can be administered either individually or in a group setting.
Scoring: The scales for the PSI are as follows: Discomfort (Di), Expression (Ex), Alienation (Al), Social Nonconformity (Sn), and Defensiveness (De). These five primary scales are transformed to T-Scores with a mean of 50 and a standard deviation of 10. The conversion from raw scores to T-Scores can be done by either looking up the values in a table in the manual or by plotting the scores directly onto a profile sheet. Separate norms exist for male and females.
Reliability: The internal consistencies of the five scales ranged from a low of .51(De) to .85 (Di). After ten days, the test-retest reliability ranged from .73 (Al) to .89 (Sn); after one month, both Al and De correlated .66, whereas the reliability for Sn rose to .95.
Validity: Many studies have correlated the PSI scores with other personality instruments, such as the MMPI, California Psychological Inventory (CPI), the Eysenck Personality Inventory (EPI), and the Maudsley Personality Inventory (MPI). In general, the PSI appears to have good construct validity. The Alienation Scale correlates with MMPI Scales F, Sc, Pa and, to a lesser degree, with Pt Scales, which tap varying degrees of pathology. Social Nonconformity correlates with Fd on the MMPI and a separate scale of sensation seeking and has a strong negative correlation with the Marlowe-Crowne Social Desirability Scale (SDS). The Discomfort Scale correlates well with various indices of anxiety, such as the MMPI's Pt Scale and the MPI's Neuroticism Scale, whereas the Extraversion Scale has a strong negative correlation with Si and a strong, positive relationship with the MPI and EPI Extraversion Scale. The Defensiveness Scale is closely associated with the MMPI's L and K Scales.
Norms: 100 males and 100 females, representative of the age distribution and mean educational level of the country, comprised the standardization group.
Suggested Uses: The PSI is recommended as a screening device in clinical and research settings.