Discredited

The is the belief that autism is a manifestation of the male brain to an extreme level. This is because the female brain was expected to show high levels of empathy compared to the male brain which supposably showed high levels of systemising. People with autism scored high levels on a systemizing scale with low levels on empathising. In addition, people with autism tend to prefer structure and are good at noticing patterns. Other evidence for this theory is a male parent's supposed lack of affection to children, which showed a disinterest in the child. Children with autism are less likely to look at people's faces.

Outdated statistics show that boys are far more likely to have autism than girls, and that boys naturally gravitate to systems, i.e. toy cars, after one day of life.