Experimenter identity: An invisible, lurking variable in developmental research
Bibliographic record
Abstract
Abstract Developmental researchers are well aware that children behave differently around different people. Nevertheless, researchers rarely consider (and report on) who is running their studies. Indeed, in a survey of articles published in the last 3 years in 4 top developmental journals, we find that the vast majority of studies fail to report any information about experimenter identity, despite the fact that child–adult interactions may be strongly influenced by the social inferences that individuals draw from one another. We argue that developmental researchers need to acknowledge how experimenter identity could be acting as an invisible, lurking variable, influencing the outcome and generalizability of studies. We provide simple suggestions for how researchers and journals can begin to address this issue, thereby improving the quality and depth of the work in our field.
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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 | 0.234 | 0.294 |
| Meta-epidemiology (narrow) | 0.000 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.006 | 0.006 |
| Science and technology studies | 0.004 | 0.033 |
| Scholarly communication | 0.012 | 0.016 |
| Open science | 0.003 | 0.010 |
| Research integrity | 0.002 | 0.004 |
| Insufficient payload (model declined to judge) | 0.004 | 0.000 |
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; the direct Gemma label and the distilled Codex classifier agree on what is shown here.
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".