The neural representation of stereotype content.

Area of Science:

• Cognitive psychology
• Social neuroscience
• Neuroimaging

Background:

• Social group judgments rely on warmth and competence dimensions.
• Serial dependence (SD) is a cognitive bias where recent perceptions influence current judgments, primarily studied in vision.
• The independence of warmth and competence axes in social cognition is debated.

Purpose of the Study:

• To investigate if serial dependence (SD) extends to non-visual stimuli like social groups.
• To explore the neural correlates of social group evaluation and SD using electroencephalography (EEG).
• To test the interdependence of warmth and competence dimensions in social judgments.

Main Methods:

• Participants evaluated social groups, and their judgments were analyzed for serial dependence.
• Electroencephalography (EEG) measured brain activity during social evaluations.
• Representational similarity analysis (RSA) was used to identify neural signatures.

Main Results:

• Social group judgments exhibited serial dependence (SD), particularly when successive groups were close in the representational space.
• Evidence suggests non-separability between warmth and competence dimensions; SD did not occur if groups differed significantly on one dimension, even if irrelevant.
• EEG data revealed distinct neural signatures correlating with social group positions in the representational space.

Conclusions:

• Serial dependence (SD) is a widespread cognitive phenomenon influencing social evaluations.
• Social judgments of warmth and competence are serially dependent and potentially non-separable.
• EEG can uncover reproducible neural signatures of social evaluation processes.