Complex sentence: Skinner, like Thorndike, put animals in boxes and observed them to see what they were able to learntheories of Thorndike and Pavlov were later synthesized by Clark Hull.
Split into simpler sentences: Skinner, like Thorndike, put animals in boxes and observed them to see what they were able to learn. The learning theories of Thorndike and Pavlov were later synthesized by Clark Hull.