Concurrent validation studies of the TAT have proposed three simple, objective scores which employ stimulus-properties of the cards (3, 5, 6, 7). These scoring categories, (a) Perceptual Organization (PO), (b) Perceptual Range (PR), (c) Perceptual Personalization (PP), were developed from a rationale for objective scoring (2) and a statement of personality theory (1). Two scoring categories, PO and PR, had approximately equivalent predictive efficiency. As a consequence further research will focus on separate categories.