Morgan's Canon
Law of parsimony in comparative (animal) psychology / From Wikipedia, the free encyclopedia
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Morgan's Canon, also known as Lloyd Morgan's Canon, Morgan's Canon of Interpretation or the principle or law of parsimony, is a fundamental precept of comparative (animal) psychology, coined by 19th-century British psychologist C. Lloyd Morgan.[1] In its developed form it states that:[2]
In no case is an animal activity to be interpreted in terms of higher psychological processes if it can be fairly interpreted in terms of processes which stand lower in the scale of psychological evolution and development.
Morgan's explanation illustrates the supposed fallacy in anthropomorphic approaches to animal behaviour. He believed that people should only equate the actions of animals to human states, such as emotions, intents, or conscious awareness, if a less advanced description of the behaviour cannot be posed. Alternatively, animal behaviours can be justified as complex when the animal's initiative involves procedures beyond instinctual practice (i.e. the animal is consciously aware of their own natural behaviours).[3] This explanation can be used to understand the context under which the canon was studied, as well as its praises and criticisms. Several real world applications involving mating, competition and cognition exemplify Morgan's preference to simplify animal behaviour as it relates to these processes.