PSY 2012 Lecture Notes - Lecture 6: Neuroglia, Axon Terminal, Schwann Cell
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The group that is exposed to the independent variable. The group that is not exposed to the independent variable to account for the possibility that other factors might be causing the effect that is being examined. Assigning participants to one or the other condition at random, the best way to ensure control over other interfering, or extraneous, variables. The expectations and biases of the participants in a study can influence their behavior creating this effect. The behavior of the experimenter can cause a change in the behavior of the participants due to his or her expectations about the outcome creating this effect. Participants are blind to the treatment they receive, experimenters are not. Neither the participants nor the person or persons measuring the dependent variable know who got what. A network of cells that carries information to and from all parts of the body.
