title: Conjunction benefits and costs reveal decision priming for first-order and second-order features.
abstract: Across two experiments, decision priming was examined for conjunctions composed of first-order or first- and second-order stimulus features. Observers indicated the presence or absence of one or two features in a Gabor stimulus. When a pair of stimulus features differed in their speed of discrimination, responses indicating the presence of a conjunction were faster than those for the single feature for which discrimination was slowest (conjunction benefits). Also, responses indicating the absence of a conjunction were delayed if one of the features was present (conjunction costs). These results show that first- and second-order features can prime decisions about the presence of a conjunction and suggest that the two kinds of signals can be combined at a decision stage after the discrimination of stimulus properties has begun for each system.
authors: Department of Psychology, Washington State University, Pullman, Washington 99164-4820, USA. fournier@wsunix.wsu.edu
authors: Lisa R
authors: LR
authors: Fournier
authors: Robert
authors: R
authors: Patterson
authors: Brian P
authors: BP
authors: Dyre
authors: Matthew
authors: M
authors: Wiediger
authors: Ryan
authors: R
authors: Winters
mesh_terms: D003463:Cues; D003657:Decision Making; D004192:Discrimination, Psychological; D006801:Humans; D011930:Reaction Time