critical thinking) dr. lee works is an obgyn, and wonders whether early rhythmic experiences can enhance musical ability. they recruit 30 new mothers and get half of them to agree to play brahms concertos to their babies for two months. then, 5 years later, the mothers are asked to rate their children's musical ability on a scale of 1-10. the 15 mothers who didn't play brahms mostly gave ratings around 5 or 6. but in the brahms group, 10 mothers rated their children with scores around 8, and 5 more mothers gave a rating of 2. dr. lee assumes that the 5 mothers who gave low ratings probably didn't play brahms very much. dr. lee determines that early musical experience contributes to musical ability. confirmation bias experimenter bias correlation is not causation overgeneralization