What was the purpose of the alternative hypothesis in Brendgen's practical study?

• A. To demonstrate no relationship between stress and aggression
• B. To show a positive relationship between stress events and aggression
• C. To prove environmental factors affect aggression
• D. To indicate a genetic basis for aggression

Answer: (B)

The purpose of the alternative hypothesis in Brendgen's practical study was to show a positive relationship between stress events and aggression. In psychological research, the alternative hypothesis is formulated to suggest that there is an effect or a difference based on the variables being studied. In the context of Brendgen's research, this meant that the researchers anticipated recognizing a significant correlation, indicating that increased stress would lead to greater aggression in individuals.

This aligns with the study's aim of exploring the factors contributing to aggressive behavior, particularly in relation to environmental stressors. By positing that stress events are positively related to aggression, the study sought to provide evidence supporting the idea that environmental conditions can play an influential role in shaping behavioral responses. Understanding this relationship is critical in the broader context of psychological studies, as it helps to clarify the complex interplay between external factors and behavior as opposed to purely genetic or other influences.

The alternative hypothesis sets the stage for the empirical investigation, guiding the research design toward understanding how stress might impact aggression, which is a key aspect of Brendgen's inquiry into aggressive behaviors and their origins.