An intervention study designed to improve family communication and cohesion between parents and their sons (Brody et al., 2009) revealed that the sons' DNA was important to the outcome. Which of the following was a finding from the study?

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The study revealed that the intervention had an impact on boys with a short allele of the 5-HTTLPR gene. This suggests that genetic factors may play a role in how individuals respond to interventions aimed at improving family communication and cohesion. It is important to note that this study focused specifically on boys and their parents, and the findings may not necessarily generalize to other populations or interventions.

An Intervention Study Designed to Improve Family Communication and Cohesion