During early attempts to interpret factors represented in scores on the Gumpgookies test, an instrument designed to tap motivation to achieve in young children, the factors identified by ordinary factor-analytic techniques were found to be confounded by the subjects' response sets. This paper proposes a method for defining objectively irrelevant…

A set of tests that might be reasonably used as provisional criterion measures in research on scientific thinking, particularly creative thinking, were developed and an assessment was made of the suitability of these tests as criterion variables from the standpoint of their psychometric properties. The Tests of Scientific Thinking are performance…

To assess the impact of various rating scale formats in rating student teachers, a Likert-type scale (Highly agree/slightly agree/neither/slightly disagree/highly disagree) was derived from the graphic scale currently used by the cooperating teachers and university supervisors. They rated the music student teachers on an eight-point scale from…