To get an accurate and unbiased understanding of an employee's capabilities, data from multiple sources should be collected and analyzed. This includes self-assessment, manager feedback, peer feedback, 360-degree feedback, and psychometric tests. Self-assessment gives insight into the employee's strengths, weaknesses, goals, and aspirations. Manager feedback provides an evaluation of the employee's performance, potential, and development needs. Peer feedback can provide insight into the employee's collaboration, communication, and contribution. 360-degree feedback gives stakeholders such as customers, partners, or senior leaders a chance to rate the employee's impact and value. Lastly, psychometric tests can help assess the employee’s personality, cognitive abilities, and behavior.