help with topic of autism and genetics? psychobiology?!Watch
Are you focusing on genes? brain areas?
Twin studies - Bailey et al 1995 found that 0% of unidentical twins both developed autism, 60% identical twins DID, and 90% of identical twins developed mild ASD or other related developmental disorders. Frasier et al found that 76% (I think) of identical twins both developed ASD, 34% of unidentical same sex twins developed ASD, and 18% of boy-girl twins developed ASD. This suggests a genetic link as identical twins share 100% of their DNA
ALSO, a family that has one child with autism is more likely to have another child with autism in comparison to a family that hasnt had a child with autism (genetic link?)
Another point would be to look at the differences in ASD and typical children brains: ASD children have reduced cortical connectivity than typically developing children. Autistic children often have problems with (I believe) their temporal lobe - look this up in case its not right!
One more point is that autism is more often found in children that also suffer from genetic disorders (such as Fragile X Syndrome) which would also suggest that there is a biological link to developing ASD.
Biological causes is a very broad topic but it is good to include all aspects, such as genetics and brain structure. Could also include counter arguments such as nature vs nurture. There is research that suggests there are environmental triggers that can increase the risk of autism- worth a look!
Hope this is useful to you and its not too late! I am going to make an assumption that you and others commenting on this post are students, so would be very appreciative if you could fill out my survey for my dissertation if you have a spare 20 minutes. All anonymous and am really struggling to get participants!
https://tinyurl.com/zbubxju available on this link
Again, I hope this helps!