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For each of the following problems, restate the problem in positive terms.
A) I want to stop drinking so much.
B) I want to quit smoking.
C) I don't want to fight with my daughters any more.
D) I don't want to get in trouble in school any more for fighting.
E) I want to stop hitting my wife when I'm angry with her.
Quasi-experiment
An empirical study used to estimate the causal impact of an intervention without random assignment to treatment and control groups.
Correlational Design
A research method used to examine a relationship between two or more variables, without inferring a causal relationship.
Longitudinal Research
A research method that involves observing and collecting data from the same subjects repeatedly over a period of time.
Operational Definition
A clear, precise description of how variables are measured or defined in a research study.
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