Evolution of the 4 Emotion Dimensions
PAD is a popular dimensional theory of emotions, whereby all emotions can be classified on three dimensions: Pleasure (Pleasant- Unpleasant), Arousal (Ready-Relaxed), and Dominance (Control- Lack of control). To this model has been added a fourth dimension called Predictability (Ambiguous- Certain) (please see my earlier post for why this fourth dimension is relevant).
As an example, anger and fear are both unpleasant emotions, but angry person is in control (has high dominance) while a fearful person is not in control of the situation.
Similarly, both contentment and excitement are pleasant emotions, but the former is low arousal and the latter high arousal.
Thus, emotions differ on four basic dimensions. I’ll address each of these dimensions below:
Pleasure (pleasant – unpleasant). This is similar to pleasure-pain polarity as highlighted by Millon and works at the Affective level in the ABCD model. The pleasure polarity addresses the physiological needs (Maslow’s hierarchy, see here) for maintaining body, while the pain polarity ensures that we stay out of harm’s way and take care of our safety needs. If one were to measure well-being related to this dimension, the appropriate measure would be something like PANAS, a difference between your positive affect and negative affect. In a nutshell, this is characterized by in-the-moment feelings and if your needs are met here, you live a happy life in the hedonic sense. The existential challenge would be body-givennenss and what to do given the body- a potential answer being – survive and protect body integrity.
This dimension, related to feelings, may have evolved to help our bodies/genes survive. If something leads to unpleasant emotions, avoid it; if it leads to pleasant emotions, indulge and approach!
Arousal (Ready-Relaxed): This is similar to the active-passive polarity as highlighted by Millon and works at the Behavioral level of ABCD model. The active polarity, which is related to being excited/ inspired, addresses the self-actualization needs of Maslow’s, while the passive polarity, which may be related to tranquility/ calmness/ meditation etc is related to transcendence needs. If one were to measure well-being related to this dimension, the appropriate measure would be something like Ryff’s Psychological well-being measuring things like psychological growth etc. This dimension may be related to living authentically in this world and experiencing life to the fullest. The existential challenge relevant here would be how to cope with a meaningless/ absurd world. The answer may lie in living life fully and experiencing it deeply.
This emphasis on experience is related to the ‘experience’ component of consciousness (recall that consciousness is made up of two parts- experience and agency). This dimension of emotion, related to energy/ experience, may have evolved to give the emotion a vibrant and vivid tone. That vibrancy may be required if after gaining a mind, we can retain it i.e. remain sane.
Predictability (Ambiguous- Certain): This is similar to the broad-narrow polarity as highlighted by Millon, and works at the cognitive level of ABCD model. The broad polarity, which is ambiguous and amorphous, is related to the Aesthetic and beauty needs of Maslow, while the narrow polarity to Knowledge and understanding needs. If one were to measure well-being related to this perhaps Satisfaction with Life survey might work. This dimension is related to attracting mates (both beauty and brains are attractive) and perhaps reproduction. The existential challenge here may be Death and the answer may be transcending death by leaving progeny. Cognitive abilities allow one to reflect on one’s own death and this leads to obsession with procreation. Intelligence (and beauty) associated with this dimension may be a result of sexual selection.
This dimension, associated with intelligence, may have evolved to help out bodies/ genes replicate. To figure if a mate is the best possible mate, and to attract / coax it, one may need intelligence and beauty.
Dominance (Control/ Lack of control): This is similar to self-other polarity, related to Drive level of ABCD. The Self polarity is associated with self-esteem needs while the Other polarity with Belonging needs. Another way to conceptualize the same polarity is on interpersonal dimension of competence and warmth. If one were to measure well-being related to this dimension, the appropriate measure would be something like Key’s Scoial well-being measuring things like social trust. This dimension is related to controlling/ influencing others either via power or via love. The existential given here is Isolation and the solution is domination and control through exercising one’s ego. Agency/ ego/self may be important here. the issue whether we have control or nor makes this a part of moral domain too.
This dimension, associated with ego, may have evolved to spread the memes associated with the ego far and wide.
In essence, while Feelings and Intelligence are more closely related to evolution (survival and reproduction) of our physical bodies, Agency and Experience are more closely related to the evolution of our minds.
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