1. What is the difference between reliability and validity? In what respects are they similar?
a) Reliability is the consistency of your measurement, or the degree to which an instrument measures the same way each time it is used under the same condition with the same subjects. In short, it is the repeatability of your measurement. A measure is considered reliable if a person's score on the same test given twice is similar. It is important to remember that reliability is not measured, it is estimated. There are two ways that reliability is usually estimated: test/retest and internal consistency.
b) Validity is whether the construct you are using really measures what you are using it to measure. For example, if you devised a test to measure people's self-esteem, does it really measure self-esteem, or something similar such as extraversion?
2. Why is it important to conduct a pre-employment background check? How would you do it?
a) A background check or background investigation is the process of looking up and compiling criminal records, commercial records and financial records (in certain instances such as employment screening) of an individual.
Background checks are often requested by employers on job candidates, especially on candidates seeking a position that requires high security or a position of trust, such as in a school, hospital, financial institution, airport, and government. These checks are traditionally administered by a government agency for a nominal fee, but can also be administered by private companies. Results of a background check typically include past employment verification, credit score, and criminal history.
These checks are often used by employers as a means of objectively evaluating a job candidate's qualifications, character, fitness, and to identify potential hiring risks for safety and security reasons. Background check is also used to thoroughly investigate... [continues]
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