From our web page some 15+ years ago. https://autismuk.com/autism/what-is-autism/
Most early theories of autism were psychogenic, emphasizing the role of parents in causing this severe disability of behaviour and development. Psychogenic theorists argued that parents of autistic parents were intelligent, obsessive and lacking in warmth. These theorists identified the cause of autism in the family environment and described possible mechanisms; lack of maternal communication, pathological parent-child interaction, inadequate stimulation, or reactions to parental rejection. The psycholdynamic theorists, however, have never generated supporting evidence. The only empirically verified studies concerning the emotional status of parents find that the extreme stress of being a parent of an autistic child can cause emotional difficulties. These difficulties, however, are in reaction to having an autistic child and have, in no way, been shown as a cause.