This cheat sheet covers major psychological theories that explain how emotions happen and why people experience them differently. Students need this reference to compare models of emotion, arousal, cognition, and appraisal in a clear way. It is useful for psychology units on motivation, emotion, stress, behavior, and research methods.
The goal is to help students connect each theory to real examples and common exam questions.
The core idea is that emotion can involve body reactions, conscious feelings, thoughts, and interpretations of a situation. Some theories argue that body arousal comes before emotion, while others argue that emotion and arousal happen at the same time. Cognitive theories emphasize that how a person labels or appraises an event changes the emotion they feel.
Modern psychology often treats emotion as a process with several interacting parts rather than a single simple reaction.
Key Facts
- James-Lange theory states that event leads to physiological arousal, and physiological arousal leads to emotion: event -> arousal -> emotion.
- Cannon-Bard theory states that event leads to physiological arousal and emotion at the same time: event -> arousal + emotion.
- Schachter-Singer two-factor theory states that emotion depends on arousal plus a cognitive label: emotion = physiological arousal + cognitive label.
- Lazarus cognitive appraisal theory states that emotion depends on how a person evaluates the meaning of a situation: event -> appraisal -> emotion.
- Facial feedback hypothesis states that facial expressions can influence emotional experience: expression -> feedback to brain -> emotion intensity.
- Physiological arousal includes body changes such as increased heart rate, sweating, muscle tension, and faster breathing.
- A primary appraisal asks whether an event is irrelevant, positive, or stressful, while a secondary appraisal asks whether the person can cope with it.
- The same arousal can be labeled as different emotions depending on context, such as excitement before a game or fear before a dangerous event.
Vocabulary
- Emotion
- A response involving feelings, body arousal, thoughts, expressions, and behavior.
- Physiological arousal
- The body’s physical activation during emotion, such as a faster heartbeat, sweating, or tense muscles.
- Cognitive label
- The mental interpretation a person gives to body arousal and a situation.
- Appraisal
- A person’s evaluation of what an event means and how it affects their well-being.
- James-Lange theory
- The theory that people feel emotion after noticing their body’s physical reaction to an event.
- Cannon-Bard theory
- The theory that emotional feeling and physiological arousal occur simultaneously after a triggering event.
Common Mistakes to Avoid
- Confusing James-Lange with Cannon-Bard is wrong because James-Lange places arousal before emotion, while Cannon-Bard says arousal and emotion happen at the same time.
- Forgetting the cognitive label in Schachter-Singer theory is wrong because the theory requires both physical arousal and interpretation to produce an emotion.
- Assuming all people feel the same emotion in the same situation is wrong because appraisal, past experience, culture, and context can change emotional response.
- Treating arousal as the same thing as emotion is wrong because arousal is the body’s activation, while emotion also includes feeling, thought, expression, and behavior.
- Ignoring context when labeling emotion is wrong because the same fast heartbeat could be interpreted as fear, excitement, anger, or attraction depending on the situation.
Practice Questions
- 1 A student sees a snake, their heart races, and then they feel afraid. Which theory best matches this sequence, and why?
- 2 A person has a racing heart at a concert and labels it as excitement, but has the same racing heart in a dark alley and labels it as fear. Which theory explains this best?
- 3 In Cannon-Bard theory, what happens after a person notices a threatening event: arousal first, emotion first, or both together?
- 4 Why might two students receiving the same test grade feel different emotions about it, even though the event is the same?