According to the article Back to Work about unemployed middle-aged adults, research has shown the most important source of job satisfaction to be:

A frequency distribution curve may be symmetrical without being normal

Indicate whether the statement is true or false

Which of the following should be considered when evaluating evidence for validity?

a. Whether the cause of the relationship between the test and the criterion has changed since the test was validated. b. Excessively high validity may indicate a need for improving reliability. c. Validity is only of concern when legal challenges are expected. d. Tests that are highly valid for at least two distinct populations are likely to be valid for all populations.