How does IQ relate to personality?

"It's just that IQ is primarily measured with ability tests, whereas personality tests are primarily measured with questionnaires. But this is more a reflection of a lack of ingenuity on the part of psychologists than a real difference in domain of human functioning. [...] It's theoretically possible to measure personality traits through ability tests. For instance, agreeableness could be measured through tests of perspective taking, conscientiousness could be measured through tests of self-control, and neuroticism could be measured through measures of emotional self-regulation. Viewing IQ as a personality trait is helpful because it puts IQ in perspective. We can take a birds eye view of all the many fascinating ways we differ from one another in cognitive processing, emotion, and motivation, while seeing where IQ fits into that bigger picture."
Aqui 

The 16PF Questionnaire 
Sobre Colin DeYoung (personality neuroscientist)
Sobre "The Cambridge Handbook of Intelligence"
Sobre o teste de personalidade.
The personality puzzle