The Unseen Influence: How Experimenter Bias Shapes Research
The Unseen Influence: How Experimenter Bias Shapes Research Imagine a horse that could do math. In the early 1900s, a German high school teacher named Wilhelm von Osten believed animals’ intelligence was severely underestimated. He taught his horse, Hans, basic arithmetic. “Clever Hans,” as he became known, quickly mastered addition, subtraction, multiplication, and division, tapping …