Sociology 2206A/B Chapter Notes - Chapter 9: Design Of Experiments, Selection Bias, Quasi
3 Aug 2015
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Experimental research builds on the principles of a positivist approach more directly than do the other research techniques. Begin with a hypothesis, modify something in a situation, and compare the outcomes with and without the modification. Research questions for experimental research: can"t be survey questions, need to have a scenario where something can be modified, better suited for micro-level. Random assignment: dividing subjects into groups at the beginning of experimental research using a random process, so the experimenter can treat the groups as equivalent. It is a way to divide or sort a collection of cases into two or more groups to increase ones confidence that the groups do not differ in a systematic way. In probability theory, random describes a process in which each case has a known chance of being selected. Random means a case has an exactly equal chance of ending up in one or the other group.
