The law of effect explains why a cat’s successful escape response became increasingly likely across repeated trials. Pulling a loop or pressing a mechanism was followed by escape and access to food, creating a satisfying consequence. Over time, this consequence strengthened the connection between the situation and the action, providing a behavioral account of learning through experience.
Escape time provided a measurable record of behavioral change rather than relying only on observation. If a cat required less time across successive trials, the pattern indicated that its effective response was becoming more likely or efficient. Comparing escape times therefore allowed Thorndike to examine learning as a gradual change associated with repeated experience and consequences.
Trial and error allowed the animals to encounter different actions while attempting to escape. Responses that produced the desired outcome were retained more often, whereas actions without that outcome did not receive the same strengthening consequence. This pattern supported Thorndike’s view that behavior could change gradually through the results of prior actions rather than through a single successful attempt.
A researcher placed an animal inside an enclosure fitted with a specific escape mechanism, such as a loop or pressing device. The animal’s attempts were observed until it performed the action that opened the enclosure. After escape, access to food supplied a satisfying consequence, and repeated trials allowed the researcher to track changes in performance.
The essential setup included an enclosure, a mechanism requiring a particular response, and food available after escape. The main recorded outcome was the time needed to escape on each trial. These elements connected a clearly defined action with its consequence and produced data showing whether performance changed as the animal gained experience.
The experiment helped establish experimental animal psychology by showing how learning could be studied through observable behavior and repeated measurements. Its findings also influenced later research on operant conditioning, a broader approach concerned with how consequences affect behavior. In this historical context, the puzzle box linked controlled behavioral testing with theories of learning.