Temperament refers to a person's characteristic patterns of thought, emotion, and behavior. In the context of aggressive behavior in children, temperament plays a role in determining how likely they are to exhibit such behaviors.
Neurotransmitters are chemicals that transmit signals between nerve cells (neurons) in the brain. An imbalance of neurotransmitters can affect mood regulation and contribute to aggressive behavior.
Social learning theory: Social learning theory suggests that aggression can be learned through observation and imitation of others. Children may model their aggressive behaviors after witnessing similar actions from parents, peers, or media figures.