Alfy suffers from aphasia, which is a disorder of
a. dietary deficiency of essential vitamins/minerals.
b. writing with a pencil in the hand.
c. sustaining attention over time.
d. language.
Question 2
____ is needed to determine whether a developmental principle is universal among all peoples.
a. Random assignment
b. Selective attrition
c. Cross-cultural comparison
d. Longitudinal follow-up