Psychological Reasoning:

Imo intelligence research is/was much more successful than personality research, because intelligence tests measure cognitive performance, but personality questionnaires, etc, don't measure a performance. According to the research of Judith Hall (a) women are much better than men at reading non-verbal cues, in particular when more cues are given (voice + facial expression + posture). But perhaps women are, on average, also better at complex psychological reasoning. Although it measures occupational interest, there is a big sex difference on the people-things dimension (d>1,00; e.g. b). Everyday-life observations seem to show that women, specifically the more feminine women, have a tendency to think more about persons and relationships than men. They "invest" their fluid intelligence differently than men in thinking about persons and the the emotional lives of persons, children, etc. But while the "value" of a reasoning performance about things can be judged relatively objectively, a reasoning performance about persons, in particular about the internal lives of persons is a much "softer" performance. [I have to admit that I am not well informed about the multiple "Social Intelligence" constructs, but probably this is one of the reasons why none of these constructs is useful.]