A factor rotation scheme is presented which has a property that is interesting for examining factor-structure hypotheses. Given several clusters of tests the orthogonal bounds scheme produces factors which contains these clusters in some optimal sense. (Author)

The influence hypothesis argues that the perceptual superiority of words is due to S's opportunity to use the redundancy in words for making perceptual inferences, while the Unitization hypothesis argues that words are more perceptible because there are fewer units to process in a word than in a nonword. (Author)

This article discusses the Personal Interaction Coding Inventory (PICI), a system for simultaneously studying the active and affective conditions blended into one person's responses to another. (Author/EK)

The Construction procedures and working drawing of an impact tester for wood or plastics materials testing. (GR)

Using the computer to help interpret the results of psychological and personality inventories. (RA)

The role of measurement in education is analyzed in terms of the multiple choice question suggested by the title, and new domains which are opened by building systemetrically on a sound psychometric base are illustrated. (MS)