Placebo Effects: Psychology’s Fundamental Flaw? Why active controls are not enough
A new paper published in Perspectives in Psychological Science (open access) suggests there is “a fundamental design flaw that potentially undermines any causal inference” in much psychology research. Way back in the 1950’s a phenomenon called the Hawthorne effect (AKA the observer effect) was observed, an experiment to discover whether workers in the Hawthorne Works…
