These were based on the radical incalculability of human life and the constant creation and recreation of social bonds through gifts, marriages, and general sociability.
The same group of studies suggests that a minority of adopted, institutionalized children exhibit persistent indiscriminate sociability even after more normative caregiving environments are provided.
Both approaches broadly accept that extraversion is associated with sociability and positive affect, whereas neuroticism is associated with emotional instability and negative affect.
