PSYCH 2B03 Chapter Notes - Chapter 3: Paul E. Meehl, Lee Cronbach, Type I And Type Ii Errors

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Psychologist"s seem more interested in the research process itself than in the answers their research is supposed to be seeking. Psychologists are sensitive and sometimes even self-conscious about research methodology, the way they use stats, and even about the basic procedures they use to draw theoretical inferences from empirical data. Real science is the seeking of new knowledge, not the cataloguing of facts already known: this is the fundamental difference between scientific education and technical training. Technical training conveys what us already known about a subject so the knowledge can be applied. Scientific education teaches not only what is known but also how to find out what is not yet known. Reliable data are measurements that reflect what you are trying to assess and are not affected by anything else. Measurement error: cumulative effect of extraneous influences, the leff of the error the more reliable the measurement.

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