Final answer:
Maslow described personality growth in terms of fulfilling needs from the basic physiological to the highest level of self-actualization, and eventually self-transcendence.
Step-by-step explanation:
Abraham Maslow, an influential humanistic psychologist, contributed the theory of the hierarchy of needs and described personality growth in terms of fulfilling increasingly advanced needs, culminating in self-actualization. At the base of this pyramid are fundamental physiological requirements necessary for survival. As one ascends the hierarchy, the needs become progressively more psychological and social, such as the need for security, love, and esteem. Ultimately, the pinnacle is self-actualization, where people strive to realize their full potential and express their true self. However, Maslow later extended this concept to include self-transcendence, representing the highest human motivation toward meaning and purpose beyond oneself.