Study Identifies Common Decision-Making Deficit in Anxiety and Depression
A new study across US and Indian cohorts found that both anxiety and depression impair how people translate objective value into decision evidence, rather than simply increasing threat avoidance or reducing motivation. Using EEG and behavioral modeling, researchers discovered that higher symptom severity predicted weaker value sensitivity during decision-making, while decision caution remained unchanged. This finding suggests a unified mechanism for biased decision-making in anxiety and depression that could inform treatment approaches.
Researchers conducted a study examining how anxiety and depression affect decision-making processes, testing participants from independent cohorts in the US and India as they evaluated risky gambles. Using EEG to measure the centroparietal positivity (a marker of accumulating decision evidence) and hierarchical drift-diffusion modeling to analyze choice behavior, the team found that both conditions impair the translation of objective value into decision evidence. Contrary to previous theories, traditional prospect theory parameters like risk and loss aversion showed little correlation with symptom severity. Instead, the analysis revealed that higher anxiety and depression symptoms specifically predicted attenuated value sensitivity during evidence accumulation, while decision caution remained intact. This finding suggests that internalizing symptoms disrupt decision-making at a specific cognitive interface—the value-to-evidence translation stage—offering a unified explanation for biased decision-making across both conditions.
What's missing
The study's own limitations are not detailed in the provided abstract, including sample size, demographic characteristics, potential confounding variables, generalizability beyond the tested populations, and whether findings hold across different types of decisions beyond gambling tasks.
What different sources said
- bioRxivCenter
Attenuation of value-to-evidence translation drives biased decision making in anxiety and depression
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