Final answer:
Aristotle defines recognition as a change from ignorance to knowledge, resulting in love or hate between characters. It is a key element in tragedy and can be achieved by natural means.
Step-by-step explanation:
Aristotle defines recognition, or anagnorisis, as a change from ignorance to knowledge, resulting in love or hate between the characters. It is a key element in tragedy and is often combined with a reversal of the situation. Recognition can be achieved by natural means, without the need for artificial aids like tokens or amulets. In works like Sophocles' Oedipus and Iphigenia, the recognition arises from the incidents themselves, such as the discovery of a letter. Aristotle also mentions other forms of recognition, including recognition of a person's actions or whether a person has done something. Overall, recognition is a powerful device used by poets to produce emotions like pity or fear in the audience.