Certified Human Resource Professional (CHRP) Practice Exam

Which of the following candidate assessment tools is a poor predictor of job performance?

1. Biodata test

2. Polygraph test

3. Cognitive ability test

4. Physical ability test

The correct answer is: Polygraph test

The polygraph test is considered a poor predictor of job performance primarily because it focuses on physiological responses that may not correlate directly with an individual's ability to perform specific job tasks. While polygraph tests are sometimes used to detect deception, their accuracy and relevance to day-to-day job performance are highly debated and often criticized. Many factors can influence physiological responses, such as anxiety or nervousness, which do not necessarily relate to an individual’s skills, competencies, or work behavior. Biodata tests, cognitive ability tests, and physical ability tests are generally recognized as more reliable predictors of job performance. Biodata tests assess an individual's background and experiences related to their job, which can directly inform their performance capability. Cognitive ability tests measure mental skills, such as reasoning and problem-solving, which are closely tied to job performance across many roles. Physical ability tests evaluate the candidate's physical competencies that are essential for specific jobs, ensuring that they meet the necessary fitness requirements. In summary, the polygraph test lacks validity in predicting job performance due to its indirect nature and the influence of non-job-related factors on its outcomes.