Three components of emotion:
1) Biological (neurochemical),
2) Expressive (motor-expressive),
3) Feeling (mental - experiential)

The following extreme position, put forth by Izzard & Malatesta, is debated in the developmental literature.

· Innate emotion-specific facial expressions are regular in form and time of emergence and are adaptive.
· The emotional system can function independently of the cognitive system
· Biological and social forces change instinctive expressions to more restricted and controlled emotions
· Innate expression-emotion concordance ensures effective communication with infants. [Does this rule out deception?]
· Socialization of expression contributes to regulation of feelings
· Emotion feelings are invariant over lifespan but causes and consequences develop