Interventionist causal models in psychiatry: repositioning the mind-body problem

Area of Science:

• Psychiatry
• Causal Inference
• Philosophy of Science

Background:

• Psychiatric research faces challenges due to diverse methods yielding numerous causal claims.
• Existing methodologies often blur the lines between correlational and causal relationships.

Discussion:

• The interventionist model (IM) provides a robust framework for evaluating causal claims in psychiatry.
• IM defines causation based on intervention outcomes, aligning with clinical goals of treatment and prevention.
• It distinguishes predictive-correlative from true causal links, crucial for advancing psychiatric understanding.

Key Insights:

• IM is non-reductive, agnostic to mind-body dualism, and separates causation from mechanistic explanations.
• It brings conceptual rigor to multi-level modeling, preventing overly holistic or simplistic approaches.
• IM offers a clear method for assessing the generality and depth of causal explanations.

Outlook:

• The IM provides a unified empirical framework for psychiatric causal claims.
• It steers research away from unproductive metaphysical debates towards practical, evidence-based interventions.
• This model promises to enhance the clarity and utility of causal inference in psychiatric research.