Regarding the twin studies on intelligence, twins who develop from a single egg and have the exact same genes are known as __________ twins

As Andy goes through his college classes, he realizes he has a lot of difficulty remembering what he has heard and been taught. He seems to be experiencing a serious memory problem. Which neurotransmitter is most likely involved in this problem?

a. GABA b. Dopamine c. serotonin d. acetylcholine

Impulsiveness and perseveration are opposite behaviors with the same underlying cause

Indicate whether this statement is true or false.