Validity, reliability, response processes, reference periods, invariance, scale construction.

Simulation studies, data-generating models, reporting standards, reproducible code.

Experience sampling, daily diaries, continuous-time and discrete-time dynamic models, sampling design.

A real methodological problem from a real study. Three headings, nothing else. Mark an answer as solved when it helps.

A PDF with title, authors, abstract, links and a version. Later versions are edits to the same topic.

How to do something, step by step. Packages, scripts, workflows.

Site news, rules, and what changed. Maintainers post here.

What can and cannot be identified from a design; confounding over time; study planning.