posted by Nicci .
Dr. Lange is a developmental psychologist. He specializes in cognitive development during the period of infancy. Like most psychologists who focus on specific periods of development, his studies:
a emphasize the chemical changes in the synaptic gap.
b study the credibility of statistical procedures.
c examine the relationship between biological development and the effects of the environment.
d examine brain structures for signs of pathology.
I think the answer is c. Thanks