The "pleasure center" of the brain is located in the

Many studies confirm that children with persistent learning difficulties in reading and math are often

A) from advantaged backgrounds. B) deficient in working memory. C) families who don't value education. D) skilled at inhibition.

Huntington's disease is the most common example of a

A) genetic disorder that is governed by a dominant allele. B) disorder caused by a sex-linked chromosome abnormality. C) genetic disorder governed by a recessive gene. D) chromosome abnormality causing mental retardation.