title: Redundancy gain in semantic categorisation.
abstract: Redundancy gain refers to the performance enhancements often associated with the presentation of redundant versus single targets (for example, faster, more accurate, or more forceful responses). Though predominantly observed in relatively simple tasks (e.g., stimulus detection), there have been some efforts to investigate similar phenomena in tasks involving higher level processing. We conducted three experiments aimed at determining (a) whether a redundancy gain would be evident in a task unambiguously requiring higher level processing (the semantic categorisation of visually-presented lexical stimuli), and (b) if so, what accounts might be appropriate to explain such findings. We found that redundancy gains are observed in such tasks, and we conclude that both coactivation and race models can account for these gains.
authors: University of Otago, PO Box 56, Dunedin 9054, New Zealand. Electronic address: petershepherdson@gmail.com.
authors: Peter
authors: P
authors: Shepherdson
authors: University of Otago, PO Box 56, Dunedin 9054, New Zealand. Electronic address: miller@psy.otago.ac.nz.
authors: Jeff
authors: J
authors: Miller
mesh_terms: D000293:Adolescent; D000328:Adult; D001288:Attention / Q000502:physiology; D005260:Female; D006801:Humans; D007600:Judgment / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D010775:Photic Stimulation; D011597:Psychomotor Performance / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology*; D012660:Semantics; D055815:Young Adult
keywords: Categorisation; Coactivation; Race model; Redundancy gain; Semantic processing