Many H.R. Departments pride themselves on the skill with which they can interview prospective employees in order to assess their qualifications for the position being advertised, the fit of the employee with the organization, and the likelihood that the employee will stay with the organization for a reasonable period of time. What employers are often not cognizant of is the limitation imposed on this process by the provisions of various provincial and federal Human Rights statutes.
According to Susan J. Herman, author of Hiring Right, A Practical Guide, the interview is the most frequently used selection tool and the least valid and reliable. Validity is the degree to which a selection tool like testing or interviewing measures what it is supposed to measure. The closer a statistic is to 1, the more valid it is. Yet interviews have an average validity of 0.14 while ability testing has an average validity of 0.53.