A researcher has conducted a study examining the effects of witnessing violence on externalizing behavior in 5th and 6th grade children. She administers the conflict tactics scale to the parent or parent substitute to assess the level of violence in the home. This measure produces two scales, one assessing whether or not the child has heard "long, loud arguments" and a second assessing whether or not the child has witnessed "acts of hitting, slapping or punching." She administers the teacher version of the child behavior checklist to the children's teachers to assess externalizing behavior. Since other variables may also impact a child's behavior in school, she also administers the neighborhood report form to assess the level of violence in the neighborhood. Suppose the researcher is not very well versed in statistics and comes to you for advice. If all variables can be considered normally distributed, what statistics would you recommend that the researcher use to examine the research question above? Your recommendations must be clear and justify your choice of statistical technique. Be sure to discuss how you would examine both the statistical significance and effect size of any relationships suggested by the above research protocol.