Guides ยท Science
Science Experimental Controls Basics
Understand controls and confounders
This guide explains why experimental controls matter: control groups, blinding, randomization, and how to identify confounders that can distort conclusions.
- controls
- confounders
- randomization
- blinding
- experiments
Control groups
Compare against a baseline to isolate the effect of the intervention.
Randomization
Random assignment reduces systematic differences between groups.
Blinding
Blinding reduces bias in measurement and behavior when outcomes are subjective.
Identify confounders
Look for variables that influence both the treatment and outcome and need to be controlled.
Keep Exploring
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Citizen Science Getting Started
Participate in real studies with simple tools and protocols.
How it works
Immune Response
See how barriers, immune cells, and antibodies coordinate to detect threats and clear infections.
Why it matters
Climate Resilience
Climate resilience reduces damage from climate-related hazards and speeds recovery.
Comparison
Mitosis vs Meiosis
Mitosis makes matching cells for growth and repair, while meiosis creates sex cells and introduces genetic variation.