PSYB01H3 Chapter Notes - Chapter 8: Habituation, Posttraumatic Stress Disorder, Dont
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Iv is manipulated to create groups that differ in levels of variable and then compares the groups in terms of dv. 2 variables: independent variable (iv) two levels, experimental group, control group, dependent variable (dv) Only difference between two groups is manipulated variable. Experimental method involves control over extraneous variables, through keeping variables constant (experimental control) or using randomization to make sure that any extraneous variables will affect both groups equally. 2 forms of basic, simple experimental design introduce the iv: posttest-only design. Measure the effect of iv on dv. Choose the participants and assign them to two groups. Procedures must achieve equivalent groups to eliminate any potential selection differences (people selected to be in conditions can"t differ in any systematic way) Has to be randomly assigned to two groups/conditions or. By having the same participants participate in both conditions: 2. Such as an experimental group that receives a treatment and a control group does not.
