| NURTURANCE/LOVE | TRUST |
Emotions | Love, sympathy, empathy | Felt security or anxiety |
Function | Pair-bonding, nurturance, investment in children | Protection, proximity maintenance; develop default trust posture based on experience |
Mechanism | Physiological reward system | Internal working model, a cognitive schema based on the behavior of attachment objects |
Environmental input | Parental warmth | Sensitivity and responsiveness |
Heritable | Yes | No (emotionality/neuroticism may influence indirectly) |
Five factor model | Yes, Factor II | No |
Sex differences in infancy | Yes (females > males) | No |
Distribution among primates | Pair-bonding rare | Very common |
Patterns among autistic children | No affection, sympathy, empathy | Normal attachments |