# Research plan attachments

Exploratory factor analysis of the 15 items, with suitability checks, factor-number assessment and oblique rotation; do not force three factors merely because the questionnaire has three sections

The measurement-structure check is planned before the research hypotheses. It is not a fourth hypothesis and is separate from the three-hypothesis Holm family. The original request is retained in measurement-plan.json.

Planned additional analysis: extend H2 with work arrangement and tenure groups to assess sensitivity to background adjustment; distinguish this from the three hypotheses

A1 is an expanded model explicitly requested in the authored study brief, not an automated background-by-outcome pair offer. This model alone does not establish improvement over H2; that claim requires a computed model comparison.