table \[words\_big5\], agreeableness is implied by ‘family’ and ‘heart’; conscientiousness is implied by ‘family’ and ‘lmao’; and low openness is implied by ‘ur’. Overall, the list can be characterized as prosocial, or at least concerned with social relationships. Predicting low IQ with prosocial features seems to challenge some previous research.

Gottlieb et al observed that learning disabled children were more likely to engage in solitary play [@gottlieb1986sociometric]. Play has also been observed to be more aggressive [@bryan1976come]. More directly related to our task, McConaughy and Ritter showed a positive correlation between the IQ of learning disabled boys and social competence scores; and a negative correlation between IQ and behavior problem scores [@mcconaughy1986social]. For further review of the subject see [@bellanti2000disentangling].

An MSE optimal classifier seeks to generalize information about samples near the average. This can cause bias when classifying minorities, but is instructive when interpreting features. Features should say something about the majority of our sample, those with IQ near the mean. This explains why antisocial behavior among those with extremely low IQ does not preclude prosocial behavior indicating moderately lower IQ. Reflecting the limitations of this type of study, words like ‘family’, ‘friend’, and ‘heart’ could also be caused 