My father came over to England last year to see me. We went out for lunch. My stepdaughter and grandchildren were there too. I am not aware of any autism in my family history . However based on that brief interaction , and other brief interactions with my father , my stepdaughter said at my assessment that he had quite a few similar traits to myself .
Of course they may not have been autism related traits . My father has never had a great problem interacting with people.His job working at the Foreign office,and especially as a diplomat abroad, necessitated him having good social communication skills.
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Socially drifted middle class