Reading focus
Syllabus: How Does Substance Use Become Persistent Despite Harm?
Compare Room’s disputed inference with the claims you identified in the opening review.
Why you’re reading it. Keep social conditions and policy visible as explanatory questions in their own right.
A question to consider. Choose one population-level change that individual brain measurements alone could not explain. What study would test its contribution?
Why this reading
A short disagreement can expose an important inferential step. Room accepts that neurobiology contributes to addiction but questions the move from that claim to privileging a brain-disease explanation. The letter asks what becomes visible, or receives less attention, when a field chooses its organizing language.
Before you read
A level of explanation concerns the scale of the account: neural processes, individual behavior, relationships, institutions or markets. These levels can interact. A disagreement about explanatory priority need not be a disagreement about whether a biological process exists.
Read for
- Identify the exact inference Room disputes. Does his argument reject neuroscience or challenge its priority?
- Examine how his examples connect individual behavior with markets and policy. Which claims would require population-level comparisons?
- Distinguish his scientific argument from his argument about the allocation of research attention.
Consider afterwards
- Propose two studies of the same harmful pattern, one at an individual level and one at a policy level. What could each reveal that the other could not?
- What evidence would justify giving one level priority for a particular question without making it primary for every question?
Editorial context
This one-page letter responds to Heilig and colleagues. Its historical and policy examples support an argument about framing; they are not new experimental tests. The phrase “social disease” is used to challenge explanatory primacy, not to establish a replacement diagnosis. The authors’ subsequent reply is a separate contribution to the exchange.