Original sentence: Besides ethics, scientists also have concerns over methodological issues through the evidence for the use of ABA on autistic children.Many studies did not randomize and pulled subjects from researchers' own clinics, and obtained funding by ABA organizations with a clear conflict of interest for proving ABA is effective
Edited sentence: Besides ethics, scientists also have concerns over rampant methodological issues through the evidence for the use of ABA on autistic children.The study by Lovaas used a self-selected sample of autistic children with high IQ and many early and present studies also employed this poor sampling with a lack of randomization, researcher-selected samples, samples pulled from researchers' own clinics, and funding by ABA organizations with a clear conflict of interest for proving ABA is effective