For researchers planning a lab, field, or behavioral study, get help choosing negative, positive, vehicle, sham, or untreated controls that fit your question. Compare control-group options, spot confounds in a proposed protocol, and plan randomization or blinding steps to limit bias. Leave with a control-group plan, a list of risks to check, and language for your methods section.
Controls
Choose experimental controls and comparison groups for a more interpretable study.
Use Controls
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What it writes
- Experimental control-group plan
- Confound and bias checklist
- Methods-section control wording
How to use it
Include your hypothesis, treatment and comparison groups, primary outcome, and any limits on samples, equipment, or time. Naming the study setting and likely sources of variation makes control choices more useful.
What you bring
- Research question and main outcome
- Treatment groups and study setting
- Known constraints on time or materials
- A defined treatment or condition to compare
A good fit for
- Choosing controls for a cell assay with a new treatment
- Checking a field experiment for confounds before data collection
- Selecting sham and untreated groups for a behavioral study
Ways to start
A few requests this Agent can handle.
I’m testing a new compound on cultured cells. I have vehicle-treated and untreated groups planned; should I add a positive control?
I’m comparing two fertilizers across 24 garden plots. How should I assign plots and control for differences in soil and sunlight?
My behavioral study compares a procedure with no procedure. What sham control would account for handling and participant expectations?
Good to know
This workspace provides text assistance.
- Choosing controls for clinical treatment decisions
- Replacing institutional ethics or biosafety review
- Cannot inspect protocols, lab records, or datasets
- Control recommendations depend on the study details you describe
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Can I use the response in my work?
Use it as a draft to review and adapt. Verify calculations, facts, rights, and suitability before relying on it. Do not provide information you do not have permission to share.
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