The Behavioral Theory is a learning theory based on conditioning. It studies observable behaviors and ignores internal mental states. There are two types of conditioning: classical and operant. The theory has advantages such as rigorous experimental research methods and contributions to behavior shaping techniques. However, it also has disadvantages such as ignoring mental processes and biological factors. The theory was contributed to by Thorndike, Skinner, and Watson. Research questions include the benefits and limitations of the theory.