The Personal Preference Self-Description Questionnaire (PPSDQ) was developed to measure personal preferences as regards Jungian psychological types. Instruments in this area are among the most popular measures used in education and psychology; the measures are used in matching teaching and learning styles, in individual counseling and family therapy, in team building, in career planning, and in research in these and other areas. However, one challenge in using self-report measures is that some persons may fake responses or engage in undetected random responding. In both research and clinical applications, it can be important to distinguish such response patterns from legitimate profiles. The present study was conducted using data from 641 college students to investigate the characteristics of faking/random response scales for the PPSDQ. Four five-item scales were developed, one for each of the four PPSDQ constructs. These scales had expected psychometric properties. (Contains 2 tables, 4 figures, and 18 references.) (Author/SLD)