Executive Summary
Working developmental editors were interviewed and asked to think aloud through live manuscript diagnoses. We coded the resulting transcripts for editorial judgments the editors made but had never written down or taught explicitly — the tacit knowledge that experienced editors rely on but rarely articulate to clients or students.
Research Question
What editorial judgments do experienced developmental editors make routinely, but do not currently teach, write, or explain — and can that tacit knowledge be made explicit enough to teach?
Methodology
Forty developmental editors with a minimum of eight years of professional experience were interviewed individually, each working through the same three anonymized manuscript excerpts while narrating their diagnostic process aloud. Transcripts were coded by two independent researchers for recurring but unstated heuristics, with disagreements resolved through a third-pass review.
Key Findings
The most consistent tacit heuristic across editors was what we came to call the “second occurrence rule”: experienced editors rarely flagged a structural weakness on its first appearance, but reliably flagged it on its second, treating repetition as the signal that a pattern — not an isolated choice — was in play.
A second heuristic involved editors distinguishing between a scene that was “quiet” on purpose and a scene that was simply underwritten — a distinction every editor made confidently but only a handful could explain in words when asked directly.
Practical Implications
These findings shaped how the Academy sequences its curriculum: rather than teaching rules in isolation, courses now explicitly teach the second-occurrence pattern-recognition habit, and use paired quiet/underwritten scene examples so students can practice the distinction editors described but rarely taught before this study.
Future Research
A follow-up study is examining whether these heuristics transfer across genres, or whether experienced genre specialists carry additional, genre-specific tacit rules not captured in this initial general-fiction sample.