Beyond passivity: Depressive symptoms predict persistent active avoidance under ambiguity.

Area of Science:

• Psychology
• Neuroscience
• Behavioral Science

Background:

• Avoidance generalization is well-studied in anxiety but poorly understood in depression.
• Depression's impact on active versus inhibitory avoidance strategies under ambiguity is unclear.
• Existing theories suggest motivational disengagement in depression, but empirical evidence is mixed.

Purpose of the Study:

• To investigate whether depressive symptoms correlate with behavioral passivity or persistent strategy expression in avoidance tasks.
• To examine avoidance generalization in depression using a novel instrumental task.
• To differentiate between impaired learning and strategy persistence in depression.

Main Methods:

• Developed a novel instrumental avoidance generalization task with active (button press) and inhibitory (withholding) responses.
• Recruited 292 undergraduates with varying depressive symptoms (assessed via Beck Depression Inventory-II).
• Introduced ambiguous cues without feedback after initial strategy learning to assess strategy selection under uncertainty.

Main Results:

• Depressive symptoms did not affect initial avoidance learning or similarity gradients.
• Higher depressive symptoms correlated with better active avoidance accuracy post-learning.
• Increased depressive symptoms led to a higher likelihood of choosing active avoidance strategies with ambiguous cues, even those closer to inhibitory cues.

Conclusions:

• Findings challenge the notion of uniform motivational disengagement in depression.
• Depressive symptoms are associated with the persistent use of previously learned avoidance strategies when cues become ambiguous.
• This paradigm offers a framework for studying avoidance behavior in depression and its persistence in real-world contexts.