Farris et al. conducted a study to determine if men and women were equal in their ability to judge women's nonverbal cues. In this example, what type of variable was sex of participant?

What did all serious contenders for president in 2012 have in common?

a. They all came out in opposition to Super PACs. b. They all appealed to moderate voters during the primary campaigns. c. They all announced their candidacies before the end of 2010. d. They all turned down federal matching funds.

The Civil Rights Act of 1964 bans which of the following?

a. poll taxes and grandfather clauses b. discrimination in public facilities c. integration in public transportation – d. discrimination based on sexual orientation