Certified Human Resource Professional (CHRP) Practice Exam

During an interview, what type of reliability is measured by asking multiple questions to assess the same skill?

1. Test and retest reliability

2. Alternative forms reliability

3. Internal consistency reliability

4. Inter-rater reliability

The correct answer is: Internal consistency reliability

The correct answer highlights a key aspect of measurement that focuses on the consistency of responses within a single test or set of questions. Internal consistency reliability assesses whether different items on the same test or questionnaire that measure the same construct yield similar results. When multiple questions are asked during an interview to assess the same skill, it is essential that these questions correlate well with each other, indicating that they consistently measure the same underlying ability or trait. This can enhance the overall reliability of the assessment, as cohesive results suggest that the test is effectively capturing the respondent's skills or knowledge related to the topic. Other types of reliability mentioned serve different purposes. Test and retest reliability examines consistency over time by comparing scores from the same participants at different times. Alternative forms reliability involves comparing different versions of a test designed to measure the same trait, while inter-rater reliability assesses the level of agreement between different interviewers or raters. Each of these has its specific use case, but they do not directly address the assessment of multiple questions targeting the same skill as effectively as internal consistency reliability does.