GARY BROWN / SCIENCE PHOTO LIBRARY GARY BROWN / SCIENCE PHOTO LIBRARY
Caricature of the US psychologist Abraham Maslow (1908-1970) wearing a top outlining his 'hierarchy of needs'. Maslow is best known for creating Maslow's hierarchy of needs, a theory of psychological health predicated on fulfilling innate human needs in priority, culminating in self-actualisation (blue).
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