“From the lowest animals of which we can affirm intelligence up to man this type of intellect is found.”
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Psychology is the science of the intellects, characters and behavior of animals including man.
Human beings are accustomed to think of intellect as the power of having and controlling ideas and of ability to learn as synonymous with ability to have ideas. But learning by having ideas is really one of the rare and isolated events in nature.
There is no reasoning, no process of inference or comparison there is no thinking about things, no putting two and two together there are no ideas - the animal does not think of the box or of the food or of the act he is to perform.
The real difference between a man's scientific judgments about himself and the judgment of others about him is he has added sources of knowledge.
