- The act must actually happen either physically or verbally, the act of thinking an aggressive action is not enough.
- It must harm another person either physically or emotionally e.g. physically hitting someone with a baseball bat or emotionally by smashing a racket on the floor which causes anxiety in the other performer.
- It must be an intentional action, sometimes this will be pre-meditated.
A check in has intent to harm but the motivation behind this is not solely to cause harm but to gain an advantage.