Low genetic index of testosterone, a high genetic index of oxytocin (OT), and/or a low ratio of testosterone to OT indices were positively correlated with high imagination (as measured by the Autism Quotient) and high positive and total schizotypy (as measured by the Schizotypal Personality Questionnaire). In the Autism Spectrum Quotient, the Imagination subscale measures areas of social imagination which overlap with mentalistic cognitions such as theory of mind, which previous studies have identified as being association with levels of OT. The gene discussed is OXT; the disease is autism.