Butler (1980) compared errors representing intrusions and mislocalizations on 3x3 letter displays under pattern-mask versus no-mask conditions and found that pattern masking increased character mislocalization errors (naming a character in the display but not in the target position as being the target) over intrusion errors (naming a character not…

Examined 2-month-old infants' perception of sparse random-dot displays depicting an illusory shape against a background in three experiments in which background texture, luminance cues, and relative motion information were added or deleted. Found that infants preferred novel stimuli in each condition, revealing an early capacity to perceive shape…

Two experiments investigated perceptual primacy of dimensional and similarity relations in stimulus classifications of younger and older subjects. Results support a differential-sensitivity view of perceptual development which asserts that individuals at all ages primarily perceive and use separate relations. (RWB)