The document discusses assessment centers, which involve assembling complementary techniques to determine an individual's ability for a particular job. An assessment center typically involves a full day of selection tests and activities to evaluate candidates' skills in relation to the job. Candidates are assessed together by multiple assessors using varied techniques to collect a range of information on how candidates interact. Techniques aim to evaluate leadership, analytical, teamwork, communication and other skills under pressure. A typical day involves various exercises and activities. Advantages include customization and evaluating strengths and weaknesses, while disadvantages include costs, resource usage and potential for bias.