______ are a collection of studies,generally on a particular topic.These types of studies were popular in the late 1960s to test the deterrence model.

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Aggregate studies are a collection of studies on a particular topic, usually conducted at one point in time or over a short period. In the late 1960s, aggregate studies were commonly used to test the deterrence model. Longitudinal studies involve collecting data over an extended period, cross-sectional studies involve collecting data at a single point in time from different groups, and scenario studies involve hypothetical situations.

______ Are a Collection of Studies,generally on a Particular Topic