> Yep, I think it's a useful phenotype, not a disease unless the degree to which the otherwise useful traits manifest causes one to struggle to live a happy life.
Yes, it is important to distinguish phenotypes from disorders. If one has the phenotype, but isn’t impaired by it to a clinically significant degree, one does not have the disorder (ASD), but one does have the broad autism phenotype (BAP; aka the broader autism phenotype or subclinical ASD). [0] The number of people who have the phenotype without the disorder is likely several times those having the disorder. The broad phenotype is particularly common among close blood relatives (parents/siblings/children) of those with the disorder. It is also has an elevated prevalence among STEM professionals.
I think it is unfortunate there is not greater public awareness of BAP and its distinction from ASD. Probably many of the people who describe themselves as “on the spectrum” in a colloquial sense have BAP not ASD.
[0] strictly speaking, one can speak of a narrow autism phenotype (phenotype with the clinical disorder) and a broad(er) autism phenotype (phenotype without the clinical disorder), which together make up the autism/ASD phenotype as a whole. Given the distinction between the two is clinical, it is possible in theory for the exact same phenotype to be broad for one person and narrow for another - one person might be in a less supportive environment which produces clinical impairment, the other in a more supportive environment in which impairment remains at a subclinical level - impairment arises through phenotype-environment interaction, it is not always inherent to the phenotype in itself
Yes, it is important to distinguish phenotypes from disorders. If one has the phenotype, but isn’t impaired by it to a clinically significant degree, one does not have the disorder (ASD), but one does have the broad autism phenotype (BAP; aka the broader autism phenotype or subclinical ASD). [0] The number of people who have the phenotype without the disorder is likely several times those having the disorder. The broad phenotype is particularly common among close blood relatives (parents/siblings/children) of those with the disorder. It is also has an elevated prevalence among STEM professionals.
I think it is unfortunate there is not greater public awareness of BAP and its distinction from ASD. Probably many of the people who describe themselves as “on the spectrum” in a colloquial sense have BAP not ASD.
[0] strictly speaking, one can speak of a narrow autism phenotype (phenotype with the clinical disorder) and a broad(er) autism phenotype (phenotype without the clinical disorder), which together make up the autism/ASD phenotype as a whole. Given the distinction between the two is clinical, it is possible in theory for the exact same phenotype to be broad for one person and narrow for another - one person might be in a less supportive environment which produces clinical impairment, the other in a more supportive environment in which impairment remains at a subclinical level - impairment arises through phenotype-environment interaction, it is not always inherent to the phenotype in itself