Which type of tort requires the perpetrator to have knowledge and will to commit the wrong?

Intentional torts involve actions where the perpetrator has the knowledge and will to commit a wrongful act. In these cases, the individual consciously chooses to engage in behavior that causes harm to another person, reflecting a clear intention behind their actions. This could include acts such as assault, battery, trespass, or defamation, where the perpetrator's state of mind is central to establishing liability.

In contrast, unintentional torts typically arise from negligence, where a person fails to act with the care that a reasonably prudent person would exercise, without intent to harm. Quasi-intentional torts involve scenarios where the intent is not to harm but rather stems from actions resulting in emotional distress or invasion of privacy, while still not exhibiting the intentionality present in true intentional torts. Malpractice torts are a specific type of unintentional tort relating primarily to professional duties and negligence rather than intentional wrongdoing.

Thus, recognizing that intentional torts require both knowledge and will is crucial in distinguishing them from other types of torts.