Threat of shock promotes passive avoidance, but not active avoidance

Area of Science:

• Cognitive Psychology
• Neuroscience
• Behavioral Economics

Background:

• Anxiety and stress are adaptive responses to threat, promoting harm avoidance.
• Prior research indicates anxiety, induced by threat of shock, encourages behavioral inhibition (passive avoidance).
• Harm can also be avoided through active avoidance, involving withdrawal actions.

Purpose of the Study:

• To directly compare the effects of threat of shock on active versus passive avoidance within a single study.
• To investigate if threat of shock influences the learning of these avoidance behaviors.
• To explore the role of Pavlovian bias in mediating these effects.

Main Methods:

• Participants completed a cognitive task involving threat of unpredictable shock.
• Passive avoidance was operationalized as withholding a button press.
• Active avoidance was operationalized as releasing a button press.

Main Results:

• Threat of shock significantly promoted passive avoidance behaviors.
• No evidence was found that threat of shock promoted active avoidance.
• No evidence of elevated Pavlovian bias was observed in any condition.

Conclusions:

• Anxiety induced by threat of shock appears to enhance passive harm avoidance.
• Anxiety does not seem to promote active harm avoidance strategies.
• Findings suggest anxiety may favor passive avoidance to conserve energy when facing potential harm.