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# #lpeleap Chapter 2

### Research Methods

TermDefinition
Confounding variable a factor other than the independent variable that might produce an effect in an experiment.
Correlation a measure of the extent to which two factors vary together, and thus of how well either factor predicts the other.
Correlation Coefficient a statistical index of the relationship between two things. An example is -1 to +1.
Critical Thinking thinking that does not blindly accept. Rather it examines assumptions, discerns hidden values evaluates evidence and assesses conclusions.
Debriefing the post-experimental explanation of a study, including its purpose in any deceptions, to its participants.
Dependent variable the outcome factor; the variable that may change in response to manipulations of the independent variable.
Illusory correlation the perception of a relationship where none exists.
Independent variable the experimental factor that is manipulated; the variable who's effect is being studied.
Normal curve a symmetrical, bell shaped curve that describes the distribution of many types of data; most scores fall near the mean.
Standard Deviation a computer measure of how much scores vary around the mean score.
Statistical significant statistical statement of how likely it is that an obtained result occurred by chance.
Created by: lpeleap