Two major types of __________ are plagiarism and research fraud

Congress was officially given the power to levy an income tax through the

A) Sixteenth Amendment. B) Supreme Court case of Pollock v. Farmer?s Loan and Trust Co. (1895). C) revenue clause of the original Constitution. D) Internal Revenue Act. E) Balanced Budget Amendment.

One way to control for sequence effects is to

A) use double-blind designs. B) use well-validated dependent measures. C) randomly assign participants to groups. D) vary the order of presentation of conditions.