Research recruitment criteria should address a specific problem. A convenient group of colleagues does not represent the people using the product. A useful brief identifies the decision to make and the evidence needed to assess it.

Plan research recruitment criteria around the task
Recruit around relevant behaviors and tasks while documenting gaps in coverage. For product teams, the brief should explain what will be different for the person using or maintaining the interface.
A realistic planning example
A procurement portal study includes occasional approvers as well as the administrators who use it daily. Treat this as an illustrative scenario. The right response still depends on the audience, constraints and evidence available for your own project.
A practical review sequence
- Define relevant behaviors. Retain a brief record of the approved choice and any remaining limitation so handoff does not turn uncertainty into a promise.
- Include less frequent users. Write down what a reviewer should be able to confirm, and keep a concrete example beside the requirement.
- Record coverage gaps. Compare the intended behavior with the actual output. Record any exception that changes what the reader or user can expect.

Check research recruitment criteria before approval
Use a small prototype or annotated flow to make the decision visible. Ask someone familiar with the task to attempt it without coaching. Observe what they understand, where they hesitate and whether they recover after a mistake. Test relevant keyboard and narrow-screen behavior as part of that journey. A screen that looks convincing in a presentation still needs to make sense in use.
A common mistake to avoid
Avoid solving the issue through visual emphasis alone. A brighter button cannot repair an unclear permission boundary, missing recovery route or unsupported assumption. Record the intended behavior so design and implementation do not quietly diverge.
Your next step
For research recruitment criteria, keep the review tied to the original problem. Use design systems for small teams to prepare the wider brief, or explore interface and portal development if you need help defining the work.
Further reading: Dialog pattern and Combobox pattern. These resources provide broader background; adapt the practical review to your specific situation.