When capable of concrete operational thought, children a. still have great difficulty with seriation tasks, such as arranging items from shortest to longest. b. can organize and manipulate...

When capable of concrete operational thought, children

a. still have great difficulty with seriation tasks, such as arranging items from shortest to longest.

b. can organize and manipulate information mentally.

c. can reason about abstractions.

d. are likely to be misled by appearances.

Research on ADHD

a. indicates that it is more prevalent among girls than boys.

b. has shown that there is no genetic basis to this disorder.

c. has shown that symptoms cannot be controlled by medication.

d. has shown abnormalities in brain functioning among those with the disorder.