Final answer:
B.F. Skinner agrees with other behaviorists in minimizing the importance of internal mental events, instead focusing on observable behavior and its modification through reinforcement and punishment.
Step-by-step explanation:
Regarding the issue of internal mental events, B.F. Skinner would be most in agreement with behaviorists like John B. Watson rather than with proponents of internal mental states such as Freud, Structuralists, or Gestalt psychologists. Skinner, a notable figure in behaviorism, considered the mind a 'black box' and chose to focus solely on objectively observable behavior and its consequences. He placed significance on how behavior is influenced by reinforcements and punishments, as opposed to internal thoughts and feelings.