Theories of Emotion: James-Lange, Cannon-Bard, Schachter-Singer, Lazarus Cognitive-Mediational & Contemporary Paradigms

1. Conceptual Architecture & Taxonomy of Affect

An emotion (Latin emovere, "to agitate/move out") is an episodic, synchronized syndrome of physiological, expressive, and cognitive changes elicited by an internal or external trigger evaluated as personally significant.

The Tripartite Component Model

1. Physiological Arousal: Autonomic nervous system activation (sympathetic fight-or-flight, heart rate, skin conductance, epinephrine).
2. Behavioral / Expressive: Outward motor display (facial expressions, vocal prosody, posture).
3. Cognitive / Subjective Experience: Conscious introspective feeling state and cognitive appraisal.

Affective Taxonomy

2. Evolutionary & Cross-Cultural Frameworks

A. Charles Darwin & Innate Expression (1872)

In The Expression of the Emotions in Man and Animals, Darwin demonstrated that:

1. Facial expressions are innate, evolutionary adaptations (e.g., disgust expels toxic substances; fear widens visual fields).
2. Congenitally blind individuals exhibit identical facial expressions to sighted peers, proving biological programming.
3. Facial expressions show phylogenetic continuity between animals and humans.

B. Paul Ekman’s Neurocultural Theory

Ekman studied the pre-literate South Fore tribe in Papua New Guinea (unexposed to Western media) and proved cross-cultural universality of six basic facial expressions:

1. Happiness (Zygomaticus major contraction)
2. Sadness (Inner brow raised, mouth corners depressed)
3. Fear (Eyebrows pulled together, wide eyes)
4. Anger (Brows drawn down, glaring eyes, lips pressed)
5. Surprise (Arched brows, dropped jaw)
6. Disgust (Wrinkled nose, raised upper lip) (Contempt was added in 1986 as a unilateral lip curl).

$\textbf{Eliciting Stimulus} \longrightarrow \textbf{Universal Facial Affect Program (Innate)} \longrightarrow \textbf{Cultural Display Rules} \longrightarrow \textbf{Overt Display}$

• Cultural Display Rules: Culturally learned norms governing when, where, and how emotions are expressed. Friesen (1972): American and Japanese students showed identical disgust viewing surgery films alone; when an authority figure entered, Japanese students masked disgust with polite smiles, whereas Americans continued displaying disgust.
• Facial Action Coding System (FACS): Ekman & Friesen (1978) decomposed all facial movements into 44 anatomically defined Action Units (AUs).
• Duchenne Smile (Genuine Joy): Simultaneous contraction of Zygomaticus major (pulls mouth corners upward) AND Orbicularis oculi (crinkles crow's feet around eyes). Non-Duchenne ("Pan-Am") smiles recruit only the Zygomaticus major.

C. Robert Plutchik’s Psychoevolutionary Wheel (1980)

Plutchik organized emotions into an 8-spoke circumplex of opposing pairs:

• Opposing Pairs: Joy $\leftrightarrow$ Sadness; Trust $\leftrightarrow$ Disgust; Fear $\leftrightarrow$ Anger; Surprise $\leftrightarrow$ Anticipation.
• Primary Dyads (Adjacent Blends):
  • $\text{Joy} + \text{Trust} = \textbf{Love}$
  • $\text{Trust} + \text{Fear} = \textbf{Submission}$
  • $\text{Fear} + \text{Surprise} = \textbf{Awe}$
  • $\text{Surprise} + \text{Sadness} = \textbf{Disapproval}$
  • $\text{Sadness} + \text{Disgust} = \textbf{Remorse}$
  • $\text{Disgust} + \text{Anger} = \textbf{Contempt}$
  • $\text{Anger} + \text{Anticipation} = \textbf{Aggressiveness}$
  • $\text{Anticipation} + \text{Joy} = \textbf{Optimism}$

3. Classical & Cognitive Theories: Architectural Pathways

A. The James-Lange Somatic Theory (1884/1885)

Proposed by William James and Carl Lange: $\textbf{Stimulus} \longrightarrow \textbf{Specific Visceral / Bodily Arousal} \longrightarrow \textbf{Perception of Bodily Changes} \longrightarrow \textbf{Subjective Feeling}$

"We feel sorry because we cry, angry because we strike, afraid because we tremble." (William James)

• Core premise: Autonomic Specificity—each discrete emotion has a unique physiological fingerprint. Carl Lange emphasized cardiovascular/vasomotor changes.
• Facial Feedback Hypothesis: Somatic sensory feedback from facial muscles alters subjective affect. Strack, Martin, & Stepper (1988): Subjects holding a pen horizontally between teeth (forcing a smile via zygomaticus major) rated cartoons as funnier than those holding it with lips (preventing smiles via orbicularis oris).