Thorndike was known for his work with ______.

A) a Skinner box
B) a puzzle box
C) modeling
D) monkeys

Thorndike is best known for his work with puzzle boxes, which he used to study animal learning and behavior. In these boxes, animals had to figure out how to complete a task (such as pressing a lever or pulling a string) in order to escape from the box and obtain food. Thorndike's experiments with the puzzle boxes led to his formulation of the "law of effect," which states that behaviors which are followed by positive consequences (such as receiving food) are more likely to be repeated in the future.