What is the Rosenthal Effect and how was it demonstrated?
The Rosenthal Effect, also known as the Pygmalion Effect, refers to the phenomenon where the expectations of others influence an individual's performance. This was demonstrated in a 1968 study by Robert Rosenthal and Lenore Jacobson, where teachers were told certain students were 'intellectual bloomers.' By the end of the year, those students showed significantly higher IQ gains than their peers, not because they were aware of the expectations, but due to changes in teacher behavior.
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