Five and eight year old children were studied to determine at what age children could represent movement in imagery. Two stimuli were presented; the children had to decide if the stimulus was the same or different in shape. (Author/DEP)

Figures that undergo an implied rotation are remembered as being slightly beyond their final position, a phenomenon called representational momentum. Eight experiments explored the questions of what gets transformed and what types of transformations induce such representational distortions. (GDC)

This article investigates categorical perception as a phenomenon which can be understood in terms of adaptation level theory. Data from four experiments, two visual and two tactual-kinesthetic, supports the idea that categorical perception is a pervasive characteristic of perceptual organization. (JAZ)