If a Test That Has Reliability R Is Lengthened by a Factor

question 4

Multiple Choice

If a test that has reliability r is lengthened by a factor , the reliability R of the new test is given by ​ ​
​If the reliability is r = 0.6, the equation becomes . When the test length is unchanged, the reliability r = R(1) = 0.6. If the length of the test is doubled, the reliability r = R(2) . What percent improvement is there in the reliability when the test length is doubled?
​

• A)20.0%
• B)25.0%
• C)80.0%
• D)75.0%
• E)15.0%

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Definitions:

Avoidance Learning

is a process by which an individual learns a behavior or response to avoid a noxious or unpleasant situation or stimulus.

Aversive Event

An unpleasant or noxious stimulus that an organism seeks to avoid or escape, often used in aversive conditioning.

Matching Law

A principle stating that the proportion of responses on a particular schedule matches the proportion of reinforcements obtained on that schedule.

Maximizing Law

The principle that organisms will choose behaviors that maximize rewards and minimize penalties under conditions of uncertainty.