Tests from what have been termed the temperament and motivation modalities of personality trait organization, the 16 PF and MAT, were given to 151 high school students. The 36 primary scales from these tests were factor analyzed, and the results 16 second-order factors were rotated to a position of maximum simple structure. It was concluded that the results supported the notion of cross-modality factors, particularly with respect to self-sentiment and superego structures.