Congress passed a number of Ku Klux Klan Acts in the

It is necessary to design and carry out experiments so that the experimental conditions

A) are in harmony with each other. B) are clearly similar to one another. C) make sense to the participants. D) are clearly different from each other.

Someone joining an interest group for friendship or companionship are seeking ___________, while those who want benefits such as discounts or emergency assistance are joining for __________.

A. solidary incentives; purposive incentives B. solidary incentives; material incentives C. material incentives; solidary incentives D. material incentives; purposive incentives E. purposive incentives; material incentives