A person takes the same personality test three times in a row and receives the same results each time. The personality test is an example of a ___________ measure because it produces consistent results. A human resources manager develops a questionnaire to measure the trustworthiness of job applicants. However, after using the measure for 3 months and comparing it to other metrics, she realizes that the questionnaire is not in fact a good measure of trustworthiness. In this case, the questionnaire is not a ________ measure because it does not measure what it was intended to measure. A(n) ___________ relies on random assignment of participants to conditions so that cause and effect can be discovered.