GurjasEvidence & Policy Analytics
Public beta · Governed decision workflow

Research Design Selector

Group defensible research-design families from your stated objective, time structure, assignment, evidence maturity and feasibility. The result explains alternatives and exclusions; it does not approve a protocol or certify a causal method.

  • Runs in this browser
  • No account
  • No answer or result analytics
  • Local JSON record
Describe the design—not the findings.

Use categories and broad constraints only. This tool does not need a study title, participant details, dataset, unpublished result or institutional name.

1 · Define the decision

What must the study design support?

Complete every structured field. Optional constraints are stored only in the local decision record.

Design conditions

Decision boundary

What this workflow refuses to decide

It does not approve a protocol, establish ethical acceptability, certify measurement validity, choose a final estimator or turn observational association into causal attribution.

Method record

Engine 1.0.0-alpha.2 · reviewed 5 August 2026. Inputs remain in the active browser session unless you download the local JSON record. Do not enter names, unpublished findings, participant data or confidential institutional content.

Continue through the evidence system

Use the result, then inspect the supporting route.

Evidence behind this tool

Use the result. Check the reasoning.

This interface is a decision aid—not an automatic verdict. The 3 linked Library entries explain the source workflow, assumptions and boundary conditions that should travel with the result.