The advertising efforts of the Partnership for a Drug-Free America are examples of the ___________ model of prevention

Synaptic density reaches a peak _______________in language areas of the brain as well as the prefrontal cortex and then declines by adulthood due to pruning of unused synapses

a. in infancy b. in early childhood c. in middle childhood d. in adolescence

Classical test theory assumes that

a. there are no errors in measurement. b. each person has a true score. c. observed scores almost always reflect true ability. d. errors of measurement are systematic.