Some scholars worry that "checkbook democracy" depresses voter interest and shuts the less affluent out of the political process. Average citizens are using consumer activism to make political or social statements with their buying power.

Which experimental design involves one experimental group and three control groups?

a) Solomon four-group design b) pretest posttest control group design c) posttest only control group design d) quasi-experimental design

The most commonly cited types of sources are periodicals and books

Indicate whether the statement is true or false