A researcher was interested in whether divorce and remarriage influence the extent to which children are sociable. At a nearby school, the researcher classified 5th-graders into one of three groups: intact parents (no divorce), divorced (single-parent families), and remarried parents. The researcher interviewed the 5th-graders and rated their sociability, and also asked them to make aquestionnaire that assessed their level of comfort in different social situations. Answer the following question.

1) What type of experimental design did this researcher use?(2 points)

2) Suppose that the researcher finds that the 5th graders in the divorce (single-parent) group are less sociable than are 5th graders in the intact and remarried groups. The researcher concludes that divorce and living in a single-parent home cause children to be less sociable, and that remarriage causes improvements in sociability. Do you accept this researcher's conclusions? Why or why not? (4 points)