PSY 1004 Lecture Notes - Lecture 22: Statistical Hypothesis Testing, Dependent And Independent Variables
9 Dec 2016
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The difference is large enough and consistent enough for a hypothesis test to rule out chance as a plausible explanation. Therefore, the difference must have been caused by. Terminology for the experimental research strategy the treatments: independent variable: the variable that is manipulated by the researcher. By creating a set of treatment conditions: treatment condition: a situation or the environment characterized by: One specific value of the manipulated variable: levels: Causation and third value variable: the third-variable problem: a study may establish that two variables are related. It doesn"t necessarily mean that there is a direct (casual) relationship. A third (unidentified) variable may be responsible for producing the observed relationship. Causation and directionality problem: directionality problem: a research study may establish a relationship between two variables. The e(cid:454)istence of a relationship doesn"t alwa(cid:455)s e(cid:454)plain the direction of the relationship. The remaining problem is to determine which variable is the cause and which is the effect.
