A(n) __________ design is one in which the same persons are followed over time and data are collected on two or more occasions.

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Longitudinal research is a design in which data is collected from the same group of individuals over a period of time. This allows researchers to examine changes and patterns in behavior or attitudes over time. Ethnographic research involves immersing oneself in a particular culture or community to gain insight into their beliefs and behaviors. Quasi-experimental research utilizes a control group and manipulation of an independent variable, but lacks random assignment to groups. Cross-sectional research involves collecting data from different groups at a single point in time.

A(n) __________ Design Is One in Which the Same Persons