During a meticulous analysis of the classical learning theories—specifically examining the intrinsic philosophical differences among Edward Thorndike's 'Law of Effect', Ivan Pavlov's 'Classical Conditioning', and B.F. Skinner's 'Operant Conditioning'—which of the following alternatives most scientifically explains the role of Stimulus (S) and Response (R) and their underlying dynamics across these theories?

Understanding Learning Theories Dynamics

In Ivan Pavlov's Classical Conditioning, the conditioned stimulus (CS) is presented before the unconditioned response, operating primarily on the 'S-R' (Stimulus-Response) paradigm. Conversely, in B.F. Skinner's Operant Conditioning, the organism first emits a voluntary Response (R), following which reinforcement is delivered, known as the 'R-S' (Response-Stimulus) or instrumental paradigm.

• Pavlov: Stimulus precedes Response (S-R)
• Skinner: Response precedes Reinforcement/Stimulus (R-S)
• Thorndike: Focuses on the consequences strengthening the S-R bond.