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?

Which of the following was/were established as part of the Fair Labor Standards Act of 1938?

A. minimum wages B. standards for a legal workweek C. limits on child labor D. overtime pay E. All of these answers are correct.

If both the president and vice president die or are unable to govern, which of the following accurately describes the line of succession?

A. Senate president pro tem; Speaker of the House; secretary of state; secretary of defense B. secretary of state; attorney general; Speaker of the House; secretary of defense C. Speaker of the House; Senate president pro tem; secretary of state; secretary of the treasury D. Speaker of the House; secretary of state, Senate president pro tem; secretary of the treasury E. secretary of state; Speaker of the House; attorney general; Senate president pro tem