Suppose a researcher intended to study people's level of happiness by monitoring how often they smile or laugh when watching a movie. If this measurement does not really indicate level of happiness, psychologists would say that the data are not:
A) systematic
B) reliable
C) valid
D) event-related

Question

Quizplus · Accepted Answer

Validity refers to whether a measurement or test actually measures what it is supposed to measure. In this case, if smiling or laughing does not accurately reflect a person's level of happiness, then the data collected would not be valid. Systematic refers to whether a study has a clear and well-designed process, reliability refers to whether a measurement or test consistently produces the same results, and event-related refers to studies that are designed to investigate specific events or phenomena. These terms do not directly address the issue of whether a measurement is valid.

Suppose a Researcher Intended to Study People's Level of Happiness