A model's influence on the creative behavior of 120 fifth-grade children was studied in four variations. Separate groups observed a model who was either high or low in the fluency or flexibility creativity dimensions. Multivariate procedures were used to assess treatment effects upon children's fluency and flexibility measures collected on…

Imagery use in high school mathematics classrooms was studied. A visual image was defined as a mental scheme depicting visual or spatial information, but this definition was not spelled out to teachers or students, in order to learn what they meant by the concept. Subjects were 13 high school teachers and 54 of their students interviewed over 3…

Based on the more general principle that all thinking (including reasoning) is basically perceptual in nature, the author proposes that visual perception is not a passive recording of stimulus material but an active concern of the mind. He delineates the task of visually distinguishing changes in size, shape, and position and points out the…