The psychological approaches discussed in the assignment include behavioral, cognitive, and humanistic approaches. The behavioral approach suggests that individual behaviors are a result of external factors such as environment and conditioning. The cognitive approach assumes that an individual's behavior is controlled by their own thoughts and mental processes. On the other hand, the humanistic approach views individuals as inherently good and emphasizes self-actualization. Each approach has its own assumptions, strengths, and limitations. While the behavioral approach focuses on observable behaviors, the cognitive approach relies on scientific methods, and the humanistic approach depends on qualitative methods. The study of human behavior can be enriched by considering multiple perspectives rather than relying on a single approach.