A researcher develops a questionnaire to assess the personality trait of impulsivity among adults.In a journal article,she presents evidence that college students tend to get essentially the same score if they take the test twice,two months apart.She also presents the average score,the highest score,and the lowest score obtained by two large samples: one of 2,000 college students and one of 750 community-dwelling non-college adults.However,when you look at the sample questionnaire items she included in the article,it seems to you that they relate more to whether a person is sociable,outgoing,and fun than to whether an individual is impulsive.In this scenario,you are questioning the _____ of the researcher's questionnaire.
A)reliability
B)validity
C)sensitivity
D)reliability and the validity

Question

Quizplus · Accepted Answer

The scenario describes issues with the validity of the researcher's questionnaire. The questionnaire items do not seem to be measuring the intended personality trait of impulsivity, but instead are assessing more sociable, outgoing, and fun traits. The evidence presented on the reliability of the questionnaire (scores remaining consistent over time) does not indicate the validity of the questionnaire in measuring impulsivity accurately.

A Researcher Develops a Questionnaire to Assess the Personality Trait