Raven's Progressive Matrices is a non-verbal intelligence test designed to measure abstract reasoning and problem-solving abilities. It consists of a series of visual patterns, where the test-taker must identify the missing piece from a set of options. This test is often used in educational and psychological assessments to evaluate cognitive abilities without the influence of language skills. The test is structured in increasing levels of difficulty, making it suitable for a wide range of ages and backgrounds. It is particularly valued for its ability to assess fluid intelligence, which refers to the capacity to think logically and solve new problems independently of acquired knowledge.