Which of the following dimensions of public personnel management was not affected by the Reagan administration’s actions during his first term as president?

A major goal of experimental design is to

A) increase internal validity by increasing degrees of freedom. B) increase internal validity by decreasing degrees of freedom. C) decrease internal validity by controlling variance. D) increase internal validity by controlling variance.

The president is the central governmental source of U.S. foreign policy

Indicate whether this statement is true or false.