Psychology 1000 Lecture Notes - Lecture 4: Demand Characteristics, Confounding, Internal Validity

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: John Campbell

Document Summary

Eugenics the science of improving a human popularity by controlled breeding to increase the occurrence of desirable heritable characteristics. Developed largely by francis galton as a method for improving the human race. It fell into disfavor only after the perversion of its doctrines by the nazis. Two basic designs of research methods: different participants in each condition. Making experimental and control groups equal, ( first 20. Groups must be equal in the beginning, (intelligence, Randomly assign individuals to people in experimental groups) motivation) experimental or control group: same participants in all conditions. Alternative to random assignment (expose each participant to all condition of experiment, individuals in each condition are now equal, theyre the same people?) How well an experiment procedure actually tests what it is designed to test. Internal validity degree to which conclusion are supported. Threats confounding variables, demand characteristics, placebo effect, experiment expectancy effects. Research in 1990"s showed that participants listening to.