Cognitive Psychology - Determinants of Selective Attention

Biased Competition Theory (Desimone & Duncan, 1995)

Biased Competition Theory (Desimone & Duncan, 1995)

Theory suggesting Top-Down Attentional Control Mechanisms + Bottom Up Sensory driven mechanisms contribute towards competition among multiple stimuli for representation, leading to a response (output).

What kinds of stimuli can “capture” our attention?

• High Salient (Noticeable) Stimuli

• Movement

• Stimuli relevant to us

Salient “Singletons” Task (Theeuwes, 1992)

Task involving searching for an “odd one out” (e.g. circle not square). coloured “singletons” that aren’t the target result in reaction time being slowed. Shows top-down mechanisms does not only focus on shapes.

Stimulus Driven Selection Theory (Theeuwes)

Theory suggesting an initial bottom-up sweep is performed, where particularly salient stimuli draws attention. Selection takes place within an attentional window.

What can vary the size of Attentional Windows?

Spatial Cues

Saliency Map

Contingent Capture Theory (Folk & Remington, 1992)

Theory suggesting attention capture is not stimulus driven and is instead captured by stimuli relevant to goals.

Cue-Capture Task

Task where invalid cues slowed reaction time. But it was contingent on relation to the task (colour captured attention when target was defined by colour)

Bacon & Egeth (1994)

Suggested that instead of searching for a singleton shape, could have a strategy of spotting the odd one out so colour may be relevant to top-down goals. Theeuwes argued against this saying they were reducing salience of singletons.

Abrupt Onsets

Suggests suddenly appearing stimuli can produce stimulus driven capture. Yantis et al found onsets produced attentional capture but colour did not.