Final answer:
Studies have identified a link between harsh physical punishment by parents and the development of aggressive behavior in children. As children learn through observation, they may imitate the violent behavior they see practiced by their parents. Changing social norms and understandings of child development have increasingly classified such punitive measures as harmful.
Step-by-step explanation:
If seven-year-old Marcus's parents continue using harsh physical punishment and verbal intimidation to control his behavior, studies have shown that Marcus is more likely to develop aggressive behavior. Observational learning suggests children like Marcus tend to mimic the behavior they witness, specifically when their parents handle frustration and anger with violence. These children could learn to emulate that aggression. Moreover, research indicates that corporal punishment, such as spanking, is not only ineffective but may incite aggression in children, especially if started at a young age.
Culture and education also play a significant role in attitudes towards physical punishment, with those from certain regions and with less formal education being more likely to use such methods. Nevertheless, changing societal norms and understanding of children's psychological development have caused many to view such actions as harmful.
It's important for parents to be aware that their actions serve as a model for their children, hence, exhibiting prosocial behavior is critical for nurturing empathy, self-esteem, and socially acceptable behavior in their children, as opposed to aggression.