Emotion: Emotions are one's feelings in response to a certain situation. There are six types of emotion: social emotions, counterfactual emotions, emotions generated by what may happen (often manifested as anxiety), emotions generated by joy and grief (examples found in responses typically seen when a student gets a good grade, and when a person is at a funeral, respectively), thought-triggered emotions (sometimes manifested as flashbacks), and finally emotions of love and disgust. All of these emotions are considered to be unresolved. There are six features that are used to define emotions: intentional objects, valence, cognitive antecedents, physiological arousal, action tendencies, and lastly physiological expressions. These six concepts were identified by Aristotle and are still the topic of several talks.