A sample is a smaller group of individuals that is representative of the larger population. ...

A sample is a smaller group of individuals that is representative of the larger population.

Indicate whether the statement is true or false

Betsy is conducting a study on school psychologists. She is thinking of having school psychologists complete four experimental conditions each lasting one hour.

A colleague suggests to Betsy that she modify the design so that different groups of school psychologists are used and Betsy will not have to worry about __________.

a. attrition.
b. fatigue.
c. discontinuation.
d. exhaustion.

Think about the American Idol example in the Are You Equipped? section at the beginning of the chapter. By the judges giving their expert opinions on contestants' performances, they are communicating to the audience how we should vote.

Thus, __________ is a threat to internal validity.

a. diffusion of treatments
b. instrumentation
c. placebo effect
d. demand characteristics

Websites that end in .com or .net are reliable sources of information for research.

Indicate whether the statement is true or false

The terms interrater and interobserver refer to the same measure of reliability.

Indicate whether the statement is true or false

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A sample is a smaller group of individuals that is representative of the larger population. ...

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