PSYA01H3 Chapter Notes - Chapter 2: Demand Characteristics, Frequency Distribution, Central Tendency
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10. complexity: the human brain is way too complicated. 11. variability: no one ever do, say or think exactly the same under the same circumstances. 12. reactivity: people often think, feel, and act one way when they are being observed and a different way when they are not. 13. methods of observation: allow them to determine what people do. 14. methods of explanation: allow them to determine why people do it. 15. to observe means to use one"s senses to learn about the properties of an event or an object. 16. define the property we wish to measure and detect it. 17. operational definition, which is a description of a property in concrete, 18. measure: a device that can detect the condition to which an operational definition. 19. emg electromyography: a device that measures muscle contractions under the surface of a person"s skin. 21. validity refers to the extent to which a measurement and a property are conceptually related.
