Approach and avoidance as action effects.

Area of Science:

• Cognitive Psychology
• Neuroscience
• Behavioral Science

Background:

• Approach-avoidance behavior is often studied using arm movements like flexion and extension.
• These movements can be ambiguous, with flexion potentially indicating pulling (approach) or withdrawing (avoidance), and extension indicating reaching (approach) or pushing (avoidance).

Purpose of the Study:

• To investigate if approach and avoidance behaviors are represented by their effects (outcome) rather than the specific motor action.
• To test the hypothesis that neutral actions can become approach or avoidance reactions based on repeated outcomes (decreasing or increasing distance to a stimulus).

Main Methods:

• Participants responded to positive and negative words using key-presses, which were defined as neutral responses.
• These neutral responses were consistently followed by a stimulus movement either toward or away from the participant.
• Response times to emotional words were measured based on the congruence between the response's effect and the stimulus valence.

Main Results:

• Response times were faster when the effect of the neutral key-press action was congruent with the valence of the emotional word (e.g., approach effect for positive words, avoidance effect for negative words).
• This indicates that the action's outcome, rather than the physical movement itself, influenced the behavioral response.

Conclusions:

• Approach and avoidance actions are flexible and defined by their effects or outcomes.
• The representation of an action includes its potential to reduce or increase the self-other distance in response to emotional stimuli.