BASIC FEATURES OF THE 16PF QUESTIONNAIRE
First published in 1949, the 16PF Questionnaire has had four major revisions, in 1956, 1962, 1968, and the fifth edition in 1993 (Cattell, R.B. et al.). The latest edition contains 185 multiple-choice items, with a threepoint answer format. Item content is non-threatening, asking about daily behavior, interests, and opinions. The short ability scale items (Factor B) are grouped together at the end of the questionnaire with separate instructions. The questionnaire is written at
a fifth grade reading level, and meant for use with people 16 years and older. The instrument provides scores on the
16 primary scales, 5 global scales, and 3 response bias scales. All personality scales are bipolar (have clear, meaningful definitions at both ends)