Observation Is Insufficient for Discovering that the Surface of Still Water Is Invariantly Horizontal

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Science  13 Jul 1973:
Vol. 181, Issue 4095, pp. 173-174
DOI: 10.1126/science.181.4095.173


Among women college students who did not know that the surface of still water in a bottle is always horizontal, two types of specific task procedures designed to elicit self-discovery of the principle were ineffective. Failure to acquire the concept was reflected in inaccurate responses on the adjustment task and by inability of students to verbalize a correct strategy.

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