Details

Autor(en) / Beteiligte

• Craddock, Matt
• Lawson, Rebecca

Titel

The effects of size changes on haptic object recognition

Ist Teil von

• Attention, perception & psychophysics, 2009-05, Vol.71 (4), p.910-923

Ort / Verlag

New York: Springer-Verlag

Erscheinungsjahr

2009

Link zum Volltext

Quelle

SpringerLink (Online service)

Beschreibungen/Notizen

• Two experiments examined the effects of size changes on haptic object recognition. In Experiment 1, participants named one of three exemplars (a standard-size-and-shape, different-size, or different-shape exemplar) of 36 categories of real, familiar objects. They then performed an old/new recognition task on the basis of object identity for the standard exemplars of all 36 objects. Half of the participants performed both blocks visually; the other half performed both blocks haptically. The participants were able to efficiently name unusually sized objects haptically, consistent with previous findings of good recognition of small-scale models of stimuli (Lawson, in press). However, performance was impaired for both visual and haptic old/new recognition when objects changed size or shape between blocks. In Experiment 2, participants performed a short-term haptic shape-matching task using 3-D plastic models of familiar objects, and as in Experiment 1, a cost emerged for ignoring the irrelevant size change. Like its visual counterpart, haptic object recognition incurs a significant but modest cost for generalizing across size changes.