Comparative Trend Research
Comparative trend research is a quantitative non-experimental design that tracks changes in one or more variables over time within two or more distinct groups or populations. By drawing independent cross-sectional samples from each group at multiple time points, it reveals whether trends diverge, converge, or differ in magnitude across groups — answering not just 'is this changing?' but 'is it changing differently for different populations?'
Source record
Citations copied verbatim from the method’s source record. No claim-level verification is inferred from them.
- Creswell, J. W. (2002). Research Design: Qualitative, Quantitative, and Mixed Methods Approaches (2nd ed.). Sage Publications. · ISBN 978-0761924425
- Babbie, E. R. (1990). Survey Research Methods (2nd ed.). Wadsworth Publishing. · ISBN 978-0534126728
Curated claims
Claims persisted in the evidence ledger, each with its own assessment.
This view does not invent a claim assessment when the ledger has none.
Related methods
Generated from the method graph and shown as machine-suggested relations — no evidence claim is inferred.