Personnel Selection Adding Value Through People, Fifth Edition (Mark Cook

auth.

A comprehensive, evidence-based review of how organizations can add value by scientifically finding, assessing and keeping the right employees through valid, fair and cost-effective selection methods.

Personnel Selection: Adding Value Through People distills a century of research on how employers pick staff, showing that employees vary enormously in value and that good selection therefore pays for itself many times over. Mark Cook systematically evaluates every major selection method — interviews, mental ability tests, personality questionnaires, biodata, assessment centres, references, work samples, emotional intelligence and more — against six criteria: reliability, validity, fairness, acceptability, cost and practicality. Drawing on meta-analysis and validity generalization, the book cuts through folklore (graphology, unstructured interviews, faith in plausible salespeople) to reveal what genuinely predicts performance and why, while candidly addressing the legal minefield of adverse impact and the diversity-validity dilemma. For HR professionals, psychologists and managers, it is both a rigorous scientific reference and a practical guide to building selection systems that are accurate, defensible and value-adding.

The model it argues

A causal framework in which selection design choices (grounded in job analysis) drive the validity, fairness and acceptability of assessment, which in turn shape the calibre of people hired and ultimately the value added to the organization. Applicant psychological states (reactions, faking) and contextual conditions (adverse impact, labour market) moderate and mediate these links.

Key ideas

Job Analysis Quality: The degree to which the requirements of a job — its tasks, competences and required attributes — are systematically and accurately identified before selection is designed.
Selection Method Validity: The extent to which a selection method accurately predicts work performance and measures relevant, intended constructs.
Assessment Reliability: The consistency with which a selection assessment yields the same result across occasions, raters or items.
Applicant Faking / Self-Presentation: The distortion by applicants of self-report responses to create a more favourable impression during selection.
Applicant Reactions / Perceived Fairness: Applicants' evaluative perceptions of selection procedures, including their fairness, acceptability and invasiveness.
Adverse Impact: The disproportionate exclusion of protected groups (women, minorities) by a selection method, creating a legal presumption of discrimination regardless of intent.
Calibre of Candidates Hired: The quality of those actually selected on the assessed attributes, relative to the applicant pool.
Job Knowledge Acquisition: The declarative, procedural and tacit knowledge an employee gains about the job, which links ability to performance.