LOWER PITCH IS LARGER, YET FALLING PITCHES SHRINK: INTERACTION OF PITCH CHANGE AND SIZE CHANGE IN SPEEDED DISCRIMINATION
Experiments using diverse paradigms, including speeded discrimination, indicate that pitch and visually perceived size interact perceptually, and that higher pitch is congruent with smaller size. While nearly all of these studies used static stimuli, here we use Garnerâ€™s speeded discrimination paradigm to examine the interaction of dynamic pitch and size: continuous rise/fall in pitch and increase/decrease in object size. Two intriguing results emerged: first, congruence effects without Garner interference, an unusual pattern not consistent with some interpretations of Garner interference; and second, congruence effects where ascending pitch is congruent with growing size, descending pitch with shrinking size. Thus static and dynamic versions of these auditory and visual stimuli interact in opposite ways. Our interpretation of these results focuses on effects of within-trial changes on Garnerâ€™s tasks and on the association of changes in apparent size with changes in distance.