The study of human development is ______, meaning that it integrates research findings from the fields of medicine, anthropology, and sociology.

In developed countries, where are infants usually sleeping?

a. in a car seat b. in bed with their siblings c. in bed with their mothers d. in a room by themselves

____ is a developmental disorder marked by a lack of interest in social relations, abnormal language development, and repetitive behavior

a. Autism b. Turner syndrome c. Down syndrome d. Fragile X syndrome