A team of researchers is asked to determine the effectiveness of a psychological intervention on the reduction of school violence. What is the best method the researchers could use to test whether the intervention worked?

Question

Quizplus · Accepted Answer

The most effective method to test the effectiveness of the psychological intervention on the reduction of school violence would be to conduct an experiment comparing schools that received the intervention with those that did not, based on random assignment. This method would help to ensure that any differences in violence levels between the groups after the intervention can be attributed to the intervention and not to any other factors or differences between the schools themselves. Self-report surveys could be biased, while observing schools that received the intervention would not allow for comparison with schools that did not receive the intervention. Comparing levels of violence before and after the intervention does not account for other factors that could have influenced any changes in violence levels.

A Team of Researchers Is Asked to Determine the Effectiveness