PSYCH 101 Lecture Notes - Lecture 3: Dependent And Independent Variables, Observer-Expectancy Effect, Central Tendency
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If you wish to establish a causal relationship between two you must change to the second method used in science - the experiment. Simple experiments generally have 1 independent variable, complex experiments may have 2-3. Experimenter measures to see how it was affected by the changes in the independent. Simple experiments generally have one dv and more complex studies may have 10-12 dvs. Receives the real treatment which the application of the iv. Make experimental group & control group as similar as possible in gender, age, weight, categories, etc. Serve as a basis of comparison for the performance of the experimental group. These are variables other than the independent variables that may have an effect on dependent variable. Suppose we are doing a test on the effect of alcohol on driving skill. We know that women are generally lighter than men and more prone to the effects of alcohol.