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 or not a measurement instrument actually measures what it is intended to measure. If researchers use smiling or laughing during a movie as a way to measure happiness, but this doesn't really reflect the participants' overall level of happiness, then the data would not be considered valid. Reliable refers to whether or not a measurement tool is consistent and yields similar results each time it is used, and systematic refers to the consistency with which a research study is conducted. Event-related refers to measurements that are taken at specific time points or in response to specific events, which is not relevant to this question.

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