According to the ocean model, individuals who appear to be socially clueless, insensitive, pessimistic, and grumpy may be low in:

According to the ocean model five factors influence and describe the human personality and psyche: openness to experience, conscientiousness, extraversion, agreeableness, and neuroticism. So, according to this model, individuals who appear to be socially clueless, insensitive, pessimistic, and grumpy may be low in neuroticism (low emotional stability:corresponds to the confidence and being comfortable in one’s own skin).

Iam pretty sure it is c. 2000 bce