Contingent capture is weakened in search for multiple features from different dimensions

Area of Science:

• Cognitive Psychology
• Neuroscience
• Visual Attention

Background:

• Previous research demonstrated simultaneous attentional guidance using two color features.
• The current study investigates attentional guidance with features from different dimensions.

Purpose of the Study:

• To determine if observers can maintain more than one attentional set and search for two features in parallel.
• To investigate attentional guidance by two features from different dimensions.

Main Methods:

• Three spatial-cueing experiments were conducted.
• Contingent capture during single-set versus dual-set search was compared.
• Attention guidance was assessed using features from color, size, shape, and orientation dimensions.

Main Results:

• Attentional guidance was less efficient when searching for two features compared to one.
• This impairment differed significantly across various feature dimensions.
• Selection history did not enhance contingent capture and affected post-selection processes.

Conclusions:

• Attentional guidance by multiple templates may be impaired in cross-dimensional disjunctive search.
• Future research should explore this impairment in within-dimension search.
• Selection history does not account for contingent capture and influences later stages of target selection.