A Necker cube is an example of a(n)

Ensuring that samples, tasks, and contexts for conducting research represent the real-world people and situations that the investigator aims to understand is key to

A) inter-rater reliability. B) test–retest reliability. C) internal validity. D) external validity.

When must an author provide a citation for information presented in his or her paper?

A) when presenting information that is not one's own thoughts or information that is not considered common knowledge B) only when the information is considered common knowledge to other psychologists C) only if he or she used information from a journal article D) any time he or she thinks a citation might improve the strength of their argument