Exam 7: Experimental and Quasi Experimental Designs

In an experiment subjects are given a pre-test in an effort to assess their attitudes about a new federal sentencing law that Congress is debating.Subjects assigned to the experimental group are given a series of lectures by experts on the impact the new law will have on prison populations.Immediately after the last lecture,a post-test is given to measure any attitude changes.Anticipating what the test is designed to measure (because of the lectures)those in the experimental group are subject to the threat of:

How does a cohort design differ from other quasi-experimental designs?

Essentially,an experiment examines the effect of:

_____________validity becomes an issue when findings are based on small samples of cases.

The first decision for selecting subjects for an experiment is:

In the classical experiment subjects are measured on the independent variable before the experiment begins and again after the dependent variable has been manipulated by the researcher.

Creaming,or skimming the best,risks off the top to be incorporated in an experiment,is a threat to ____________________.

Two dimensions to generalizability are:

A questionnaire is sent to 1,000 police departments in Florida and gathers information on the number of sick days officers use after being involved in a shooting incident.This is an example of what type of research?

The threat of is a concern any time the researcher begins with subjects who exhibit extreme values on the dependent variable.