Because low marital satisfaction should lead to divorce, professor rogers checked his measure of marital satisfaction by examining whether couples with low marital satisfaction scores later obtained divorces and those with high levels of marital satisfaction remained married. this illustrates the use of:

How did north carolina’s constitution of 1868 affect women and free blacks? a. they were given the right to vote b. they were excluded from participation in government c. they lost economic power d. they were able to hold office if they owned property

How have the changes in china's laws affected its economy?

The controlled use of fire by hominids: (a) limited the expansion of hominids into certain environments, such as dry grasslands. (b) decreased the amount of food energy available in the hominid diet. (c) contributed to geographical expansion and food production techniques in positive ways. (d) has been shown to contribute little to the digestive process of hominids.