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G Zhang - American journal of criminal justice, 2019 - Springer

The effects of a school policing program on crime, discipline, and disorder: A quasi-experimental evaluation.

quasi-experimental designs

Zhang

GSID: H8m-e03MNCoJ

Excerpt

… This study utilizes a quasi-experimental design combined with propensity score techniques to strengthen the internal validity of the results. Furthermore, this study uses three years of data and considers the number of years police officers are present at a school. This is because …

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