The biological abnormality most consistently found in individuals with autism is a(n):
A)Elevated dopamine level
B)Elevated serotonin level
C)Ability to regulate neuromodulator levels
D)Reduced serotonin level

Question

Quizplus · Accepted Answer

The best choice is D, reduced serotonin level, as this is the most consistent biological abnormality found in individuals with autism. This is supported by research showing lower levels of serotonin in the brain and blood of individuals with autism. Elevated dopamine levels have also been observed in some individuals with autism, but this is not as consistent as reduced serotonin. The ability to regulate neuromodulator levels is not a common biological abnormality found in individuals with autism.

The Biological Abnormality Most Consistently Found in Individuals with Autism