PSYC 002 Lecture Notes - Lecture 5: Dependent And Independent Variables, Confounding, Heredity
30 Mar 2017
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Measure whether this manipulation influences other variables. Attempt to control extraneous factors that may influence the outcome. Independent variable: the variable manipulated or controlled by the experimenter (cause) Dependent variable: the variable that is measured by the experimenter (effect) Experiment will show if dv is influenced by iv. Experimental group: receives a treatment or an active level of the iv (the changed group, Control group: the group that is not exposed to the treatment or receives a zero-level of the. Random assignment: people assigned to a group, each participant has an equal likelihood of being assigned to any group/no discrimination. Counterbalancing: the order of conditions is varied so that no condition has an advantage. All participants could be exposed to all conditions of the independent variable. Internal validity: an experiment supports clear causal conclusions because it is designed well. Confounding variables: two variables are interconnected; we cannot determine which one has influenced a dependent variable.
