[Solved] Why is it hard to observe the chromosphere? Aggression: Aggression is any behavior that is intended to harm another individual who does not wish to be harmed. Reinforcement: Reinforcement is a principle in behavioral psychology that increases the likelihood of a behavior being repeated by applying a consequence or reward. Pornography: Materials (videos, images, writings) depicting sexual content intended to stimulate erotic rather than aesthetic or emotional feelings. Laboratory Noise Blasts: Loud, sudden sounds used in experimental settings, often to study stress responses or auditory processing.