Increased spatial salience in the social Simon task: a response-coding account of spatial compatibility effects

Area of Science:

• Cognitive Psychology
• Social Psychology
• Neuroscience

Background:

• Spatial compatibility effects (SCEs) occur in forced choice tasks where response side and stimulus location interact.
• SCEs diminish in individual go/no-go tasks but reappear in joint go/no-go tasks, suggesting shared task representations.
• The social Simon effect, where joint performance influences individual SCEs, has been attributed to shared representations.

Purpose of the Study:

• To investigate the role of spatial dimension salience in individual and joint go/no-go tasks.
• To differentiate between spatial response coding and shared task representations as explanations for the social Simon effect.
• To examine how social factors influence spatial response coding.

Main Methods:

• Participants performed individual and joint go/no-go tasks with varying spatial salience.
• Stimuli featured nonspatial attributes (e.g., color) and spatial cues (e.g., location).
• Response times and accuracy were measured to assess SCEs.

Main Results:

• SCEs emerged in individual go/no-go tasks when the spatial dimension was highly salient.
• SCEs were eliminated in joint go/no-go tasks when the spatial dimension was less salient.
• Findings contradict the shared task representation account and support spatial response coding.

Conclusions:

• Social factors influence spatial response coding, rather than solely relying on shared task representations.
• The salience of the spatial dimension is critical for observing SCEs in both individual and social contexts.
• This research refines our understanding of the mechanisms underlying the social Simon effect.