Individual skill
joap-study-design
Use when designing studies and measurement for a Journal of Applied Psychology (JAP) manuscript so they meet the journal's high bar on construct validity, causal inference, common-method variance, nested/multilevel data, and sample-size justification. Strengthens the design and measurement plan; it does not write code.
Journal-of-Applied-Psychology-Skills/skills/joap-study-design/SKILL.md
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# Study Design & Measurement (joap-study-design)
JAP holds measurement and design to an exacting standard. The recurring killers are **common-method
variance (CMV)**, **weak causal warrants** (cross-sectional single-source data), **unmodeled nesting**,
and **construct validity** gaps. This skill hardens the design *before* data collection, where most of
these problems can actually be solved.
## When to trigger
- Planning a study, a multi-study package, or a measurement strategy
- Writing a preregistration / pre-analysis plan
- A reviewer questioned CMV, causal inference, measurement, nesting, or power
- Justifying sample size at the relevant level of analysis
