3.4 Screening, Interviewing, and Selection

Consistent Candidate Evaluation

Selection converts a qualified pool into a hiring decision. The PHR focus is not clever interview tactics; it is job-related criteria, consistency, validity, documentation, and compliance. HR defines the selection process before evaluating candidates so each is compared against the same role requirements.

Screening starts with minimum qualifications from the job analysis. HR confirms whether applicants meet required criteria and avoids adding filters midstream unless the change is documented and applied uniformly. Missing a required license may justify screening out; lacking only a preferred qualification should not be treated as a hidden requirement.

Structured Interviews, Lawful Inquiries, and Validity

A structured interview uses the same core questions for candidates in a role, with scoring guidance tied to competencies. Behavioral questions ask about past behavior ("Tell me about a time..."); situational questions pose hypotheticals ("What would you do if..."). Structured formats have higher predictive validity than unstructured "gut-feel" interviews and produce comparable evidence across candidates.

Pre-offer inquiries must stay job-related. Avoid direct or indirect questions about age, disability or health, religion, national origin, family/childcare status, pregnancy, or genetic information — the latter restricted by the Genetic Information Nondiscrimination Act (GINA), and disability-related medical inquiries by the ADA until after a conditional offer. If a candidate volunteers protected information, the interviewer redirects to job-related topics and does not record it.

Selection tests — work samples, skills tests, job-knowledge assessments, simulations, cognitive-ability tests — should be valid under the Uniform Guidelines. The three strategies are criterion-related validity (test scores correlate with job performance), content validity (the test samples actual job tasks), and construct validity (the test measures a trait the job requires).

HR also monitors adverse impact using the four-fifths rule: if a protected group's selection rate is less than 80% of the highest group's rate, regulators may treat it as evidence of disparate impact, shifting the burden to the employer to show job-relatedness and business necessity.

A final selection checklist:

• Are criteria based on the current job analysis?
• Were candidates in the same stage treated consistently?
• Are interview notes factual and job-related?
• Were FCRA consent and required approvals obtained?
• Are reasons for selection and non-selection documented?

The strongest exam answer protects both fairness and business quality: help the manager pick the best-qualified candidate on evidence that can be explained later.

Reliability, Disparate Treatment vs. Impact, and Lawful Background Checks

Beyond validity, a good selection tool must be reliable — it produces consistent results across raters, items, and occasions. A test can be reliable but invalid (consistently measuring the wrong thing), but it cannot be valid without being reliable. Structured scoring rubrics raise inter-rater reliability among interviewers, which is why the exam favors them.

PHR items separate two theories of discrimination. Disparate treatment is intentional — treating an individual less favorably because of a protected characteristic, such as asking only female candidates about childcare. Disparate (adverse) impact is a neutral practice that disproportionately screens out a protected group, such as a strength test that fails most women without being job-related. The four-fifths rule is a screening device for impact, not treatment.

When impact appears, the employer must show the practice is job-related and consistent with business necessity, and even then a plaintiff may prevail by showing a less-discriminatory alternative exists.

Background and reference checks carry their own rules. When an employer uses a third-party consumer report, the Fair Credit Reporting Act (FCRA) requires clear written disclosure on a standalone document, the applicant's authorization, and a two-step adverse-action process: a pre-adverse-action notice with a copy of the report and the summary of rights, a reasonable waiting period, then a final adverse-action notice.

Many jurisdictions add ban-the-box rules that delay criminal-history inquiries until later in the process, and the EEOC urges an individualized assessment weighing the nature of the offense, time elapsed, and job relevance. Selection tests with disability-related medical content, and any required medical exam, must wait until after a conditional offer under the ADA. The exam-strong answer applies these checks uniformly, documents the basis for each decision, and never lets a single manager improvise a candidate-specific rule.

In practice, the selection answer the PHR rewards almost always points back to job-relatedness and consistency: define criteria from the analysis before evaluating anyone, use structured and reliable tools, ask only job-related questions, monitor selection rates with the four-fifths rule, sequence medical and consumer-report checks lawfully, and record the reason for every selection and non-selection. When a manager wants to add a filter, skip a step for one candidate, or hire on instinct, the correct response is to redirect the decision back to documented, validated, uniformly applied criteria.