Why Has Natural Selection Left Us So Vulnerable to Anxiety and Mood Disorders?
Bibliographic record
Abstract
W hat can evolutionary biology offer to our understanding of anxiety and depression?According to 2 articles in this issue, a lot.1,2 Both include details and debates that could easily obscure their shared crucial main point-the capacities for anxiety and mood were shaped by natural selection because they have been useful.Like sweating, pain, and cough, emotions are only useful in certain situations, so natural selection shaped them in tight conjunction with regulation mechanisms that express them when they are likely to be useful.3 High body temperature arouses sweating, tissue damage arouses pain, and foreign material in the respiratory tract arouses cough.People who lack these response capacities are likely to die young.So are people who express them too readily, too intensely, or too long.Regulation mechanisms have been finely tuned by millions of years of selection.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.009 | 0.023 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.002 | 0.007 |
| Scholarly communication | 0.004 | 0.008 |
| Open science | 0.002 | 0.002 |
| Research integrity | 0.011 | 0.016 |
| Insufficient payload (model declined to judge) | 0.005 | 0.002 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".