Describe two different categories of economic interest groups, and contrast these groups with public interest groups.

Varying the order of presentation of conditions in a within-subjects design will control

A) sequence effects. B) placebo effects. C) experimenter effects. D) researcher bias.

The set of criteria that spell out what conditions a prospective country must meet before joining the EU are called

a. the Paris criteria. b. the Lisbon criteria. c. the Vienna criteria. d. the Zurich criteria. e. the Copenhagen criteria.