PSY 302 Lecture Notes - Lecture 9: Quasi, Experiment, Interrupted Time Series
Document Summary
Nonexperimental research: lacks manipulation of an independent variable or, random assignment of participants to conditions or orders of conditions, or both. About a single variable rather than a statistical relationship between two variables. About a noncausal statistical relationship between variables. Causal relationship, but the independent variable cannot be manipulated or participants cannot be randomly assigned to conditions or orders of conditions. What it is like to have a particular experience. Research can be nonexperimental because it focuses on a single variable rather than a statistical relationship between two variables. Single variable research can answer interesting and important questions. Cannot do, however, is answer questions about stastical relationships between variables. Little or no attempt to control extraneous variables. Focuses on statistical relationship between two variables. But: does not include the manipulation of an independent variable, random assignment of participants to conditions or, orders of conditions, or both.
