Example image of eyePlorer eyePlorer map for 'Scientific control': Bias Scientific method Pharmaceutical drug Blind experiment Clinical trial Patient Physician Placebo Crop yield Type I and type II errors Enzyme assay Rat Sugar substitute Confounding Abecedarian Early Intervention Project Observational study Placebo-controlled study Treatment groups Aker Holding Barnes maze Eye q (product) Observer-expectancy effect Response rate ratio A431 cells Beyond This Horizon Consecutive case series Random assignment Reactivity (psychology) Standard treatment Timeline of scientific experiments Transient lunar phenomenon Uplift modelling Vaccine Adverse Event Reporting System Vaccine trial Z-factor Zelen's design Anxiogenic Blue Wool Scale List of experiments Random digit dialing Unmatched count ArteFill Assay sensitivity Glossary of gene expression terms Hazard ratio Individual differences psychology Marsh Chapel Experiment Odds ratio Postperfusion syndrome Timeline of the history of scientific method