Between the ages of 7 and 11, pruning results in a 50% loss in the circuits in the brain that control

Schizoid and schizotypal personality disorders may be distinguished only by the presence of which of the following symptoms in schizotypal persons?

a) Indifference to others. b) Visual hallucinations. c) Flat affect, little overt emotion. d) Overtly odd behaviours.

Because they are made up of effector cells, muscle fibers

a. will combine. b. tend to separate. c. can contract. d. can multiply.