Why is it beneficial for selection devices to be grounded in a job analysis?

Selection devices grounded in a job analysis enhance the relevancy of the selection process by ensuring that the criteria used to assess candidates are directly related to the actual requirements and duties of the job. When selection methods, such as interviews or tests, are based on a thorough understanding of the job's competencies, skills, and responsibilities, they are more likely to identify candidates who will succeed in the role. This alignment allows organizations to select individuals whose abilities and experiences match the specific demands of the position, ultimately leading to better job performance and a more efficient hiring process.

In contrast, while improving employee job satisfaction, aligning with legal requirements, and reducing training costs can be important, they are not directly related to the primary benefit of job analysis for selection devices. Legal compliance relates to following fair hiring practices, and cost reduction in training pertains to long-term outcomes rather than the immediate relevance of selection. The main advantage lies in creating a targeted and effective hiring strategy that directly correlates with job performance.