When Participants Begin an Experiment but Fail to Complete It,the

question 44

Multiple Choice

When participants begin an experiment but fail to complete it,the internal validity of the experiment can be threatened.Which of the following types of subject loss poses the most serious threat to internal validity?

• A)the loss is selective in that some characteristic of the participant that is related to the outcome of the study is responsible.
• B)the loss occurs because of an error by the experimenter.
• C)the loss leads to different numbers of participants in the groups in the experiment.
• D)the loss occurs because of equipment failure.

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Definitions:

Tax Rate

The fraction of income or profits that an individual or company needs to pay to the government as tax.

Investment Decisions

The process of deciding where to allocate resources in order to generate the highest possible returns.

Capital Gain

The increase in the value of a capital asset that gives it a higher worth than the purchase price.

Straight Line Depreciation

A strategy for dividing the cost of a material asset into equal yearly portions throughout its estimated useful duration.