Hibbert's Law is a principle in psychology that suggests the relationship between the intensity of a stimulus and the resulting response is not linear. Instead, as the intensity of a stimulus increases, the response grows at a decreasing rate. This means that while stronger stimuli do elicit stronger responses, the increase in response diminishes as the stimulus becomes more intense. The law is often illustrated through examples like pain perception, where a slight increase in pain may lead to a noticeable increase in discomfort, but further increases in pain result in smaller increments of perceived discomfort. This concept helps explain how humans experience and react to varying levels of stimuli.