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Gul, Amara; Humphreys, Glyn W. – Psicologica: International Journal of Methodology and Experimental Psychology, 2015
Congruency effects were examined using a manual response version of the Stroop task in which the relationship between the colour word and its hue on incongruent trials was either kept constant or varied randomly across different pairings within the stimulus set. Congruency effects were increased in the condition where the incongruent hue-word…
Descriptors: Experiments, Psychological Testing, Perceptual Development, Perception Tests
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Andrews, Lucy S.; Watson, Derrick G.; Humphreys, Glyn W.; Braithwaite, Jason J. – Journal of Experimental Psychology: Human Perception and Performance, 2011
Evidence for inhibitory processes in visual search comes from studies using preview conditions, where responses to new targets are delayed if they carry a featural attribute belonging to the old distractor items that are currently being ignored--the negative carry-over effect (Braithwaite, Humphreys, & Hodsoll, 2003). We examined whether…
Descriptors: Visual Perception, Inhibition, Visual Stimuli, Motion
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Anderson, Giles M.; Heinke, Dietmar; Humphreys, Glyn W. – Journal of Experimental Psychology: Human Perception and Performance, 2010
Four experiments examined the effects of precues on visual search for targets defined by a color-orientation conjunction. Experiment 1 showed that cueing the identity of targets enhanced the efficiency of search. Cueing effects were stronger with color than with orientation cues, but this advantage was additive across array size. Experiment 2…
Descriptors: Cues, Form Classes (Languages), Experimental Psychology, Identification
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Humphreys, Glyn W.; Hodsoll, John; Riddoch, M. Jane – Journal of Experimental Psychology: Human Perception and Performance, 2009
The authors present neuropsychological evidence distinguishing binding between form, color, and size (cross-domain binding) and binding between form elements. They contrasted conjunctive search with difficult feature search using control participants and patients with unilateral parietal or fronto/temporal lesions. To rule out effects of task…
Descriptors: Difficulty Level, Patients, Experimental Psychology, Neurological Impairments