Fill in the blanks with the word or phrase that best completes each sentence.

1		is a term referring to how well the results from an experiment apply to the population.
2		According to research by Higbee, Millard, and Folkman (1982), most human participants used in psychological research are .
3		Present-day ethical guidelines are strongly rooted in the which was established after World War II.
4		A(n) explains research to participants and is read and signed by participants prior to participation in research.
5		For laboratory experiments, participants are likely to be acquired from a(n) .
6		How you select participants for field research depends on .
7		In a field experiment, you typically have over participant selection than you have in a laboratory experiment.
8		The characteristics of participants who volunteer for research may affect how they perform in an experiment. This problem is called .
9		According to Rosenthal and Rosnow (1975), “motivation mediators” can affect the of your research.
10		Unrecognized conditioning and concealed observation are both examples of .
11		According to Holmes (1976a, b), participants exposed to deception in research should be and .
12		Research shows that the problem of using volunteer participants in research affects the of an experiment.
13		Misrepresenting the purposes of research and making false promises to participants are examples of .
14		An alternative to deception that involves informing participants about all aspects of the research and asking participants to act as though they were exposed to a treatment is .
15		Using demonstrations, allowing participants to watch subsequent experimental sessions, and making participants active participants in research are all ways to .
16		According to your text, animal research .
17		Rats are the most popular animals used as subjects in research because .
18		According to your text, animals are used in research because , , and .
19		Before you can conduct research with animals, you must have a research proposal reviewed by the .
20		According to Singer (1975), it is to set humans above other animal species.