Final answer:
Motor Program Theory faces significant challenges including lack of empirical evidence, difficulty in generalizing to various motor tasks, and limited applicability to complex movements, which undermines its effectiveness in explaining motor control and behavior.
Step-by-step explanation:
The main problems in Motor Program Theory are related to the gaps and limitations within the theory when trying to explain and predict motor behavior. Among the difficulties faced by the Motor Program Theory, the most significant issues include lack of empirical evidence to support its main ideas, difficulty in generalizing to different motor tasks, and limited applicability to complex movements. These challenges make it harder for researchers and practitioners to apply this theory to real-world tasks and to create reliable predictions based on it.
Each of these problems poses significant concerns within the field of motor control. For instance, without empirical evidence, a theory's credibility is weakened as it does not have the necessary factual backing. Difficulty with generalization implies that the theory may not be robust enough to cover a wide range of different motor skills. Lastly, limited applicability to complex movements questions the theory's usefulness in explaining and instructing movements that are not simple or straightforward.
The validity of a theory can be determined by how well it explains experimental observations and adheres to accepted rules of logic as per scientific methodology. Motor Program Theory, however, faces criticism for not sufficiently addressing the various dimensions of motor skill performance.