Which theorist developed the concept of the zone of proximal development?

According to research, which statement best characterizes the role of extended family after a divorce?

a. They have no effect on the family dynamic. b. Their effect is only felt with the parents. c. They can help provide emotional support. d. Grandmothers tend to have a greater effect than anyone else

Research that compares people of different ethnic groups

a. relies on the fact that differences in behaviors and attitudes of people within each comparison group tends to be small. b. leads to questionable data because of the problems with the interpretation paradox. c. is easier when it makes use of etics rather than emics. d. often assumes with no proof that behaviors that differ across groups are based on racial or cultural differences.