Within-category representational stability through the lens of manipulable objects

Category of Polygroup Objects

category of polygroup objects

Visual Hand Primes and Manipulable Objects

In three experiments we assessed whether priming a hand shape activated motor information. Primes consisted of photographs of hands displaying one of three postures (precision, power, open hand). Targets consisted of photographs (Experiment 1 and 3) or words (Experiment 2) of objects, artifacts and natural kinds, manipulable with a precision (pencil) or with a power grip (bottle). Participants ...

Representational Shifts During Category Learning

Prototype and exemplar models form two extremes in a class of mixture model accounts of human category learning. This class of models allows flexible representations that can interpolate from simple prototypes to highly differentiated exemplar accounts. We apply one such framework to data that afford an insight into the nature of representational changes during category learning. While generall...

Representational specificity of within-category phonetic variation in the long-term mental lexicon.

This study examines the potential encoding in long-term memory of subphonemic, within-category variation in voice onset time (VOT) and the degree to which this encoding of subtle variation is mediated by lexical competition. In 4 long-term repetition-priming experiments, magnitude of priming was examined as a function of variation in VOT in words with voiced counterparts (cape-gape) and without...