While Participating in a Lengthy Experiment Involving Job Training for Welfare

question 68

Multiple Choice

While participating in a lengthy experiment involving job training for welfare recipients,the economy enters into a major recession.Posttest measurements found that job training was unsuccessful in helping participants locate jobs.However,the experiment's designers claim that the findings were inconclusive because of internal invalidity.Which of the following sources of internal invalidity would they be most likely to name as the problem?

• A)contamination
• B)history effect
• C)selection bias
• D)the Hawthorne effect

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Definitions:

GDP

Gross Domestic Product, the total monetary value of all goods and services produced within a country's borders in a specific time period.

Technological Knowledge

The information and understanding related to the practical application of tools, machines, and techniques for solving problems and creating new products or processes.

Public Good

A product or service that is provided without profit to all members of a society, either by the government or a private individual or organization.

Education

The systematic process of facilitating learning, acquiring knowledge, skills, values, and beliefs through various means such as schooling, training, or research.