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

Design standards