PSYC 201 Chapter Notes - Chapter 7: Observational Error, Construct Validity, Internal Validity
29 Jan 2017
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Psyc 201 - chapter 7: control: control: any means used to rule out threats to the validity of research. Way of establishing that the 2 individuals (or groups, conditions, etc. ) are identical, except for the variable of interest. Each subject serves as their own control. Differences between condition are tested between subjects. Experimental group: subjects who receive the treatment. Control group: subjects in a between-subject experiment who are like the experimental group in every aspect, except receive a different level of the iv: can demonstrate control without a control group. Lab setting has good internal validity, but questionable external & construct validity. Eld research has questionable internal validity, but good external & construct validity. Allows for more control than eld research (ii) considering the research setting as a preparation - an environment that is selected or constructed for a particular purpose. Determining which situation will provide the most powerful relationship between the variables of interest.
