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research methods

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nonlinear relationship

nonlinear relationship A nonlinear relationship is a link between two variables in which changes in one are not matched by a simple straight-line increase or decrease in the other.

A nonlinear relationship is a link between two variables in which changes in one are not matched by a simple straight-line increase or decrease in the other. In psychology research, this means the association can vary across different levels of the variable rather than staying constant.