Final answer:
The law of effect was proposed by Thorndike. It states that behaviors followed by satisfying consequences are more likely to be repeated.
Step-by-step explanation:
The law of effect was proposed by Thorndike. According to the law of effect, behaviors that are followed by consequences that are satisfying to the organism are more likely to be repeated, and behaviors that are followed by unpleasant consequences are less likely to be repeated. B.F. Skinner further developed this theory and conducted experiments on animals to study behavior through operant conditioning.