The article by Carol D. Ryff explores the concept of psychological well-being, critiquing existing measures that lack theoretical grounding and highlighting the need for a more comprehensive understanding of positive functioning. Ryff integrates various theoretical perspectives, including Maslow's self-actualization, Rogers' fully functioning person, Jung's individuation, and Allport's maturity, to develop six core dimensions of well-being: self-acceptance, positive relations with others, autonomy, environmental mastery, purpose in life, and personal growth. These dimensions are operationalized through new scales and compared with existing measures such as life satisfaction, affect balance, self-esteem, morale, locus of control, and depression. The study finds that while some dimensions (self-acceptance, environmental mastery, and purpose in life) are strongly correlated with prior measures, others (positive relations with others, autonomy, and personal growth) are not. Factor analysis supports the distinctiveness of these new dimensions. Age and sex differences are also examined, revealing higher scores for middle-aged adults on autonomy, environmental mastery, purpose in life, and personal growth, and higher scores for women on positive relations with others and personal growth. The study concludes by suggesting that current measures of well-being do not fully capture the theoretical emphasis on positive functioning, particularly in areas like positive relations with others, autonomy, and personal growth.The article by Carol D. Ryff explores the concept of psychological well-being, critiquing existing measures that lack theoretical grounding and highlighting the need for a more comprehensive understanding of positive functioning. Ryff integrates various theoretical perspectives, including Maslow's self-actualization, Rogers' fully functioning person, Jung's individuation, and Allport's maturity, to develop six core dimensions of well-being: self-acceptance, positive relations with others, autonomy, environmental mastery, purpose in life, and personal growth. These dimensions are operationalized through new scales and compared with existing measures such as life satisfaction, affect balance, self-esteem, morale, locus of control, and depression. The study finds that while some dimensions (self-acceptance, environmental mastery, and purpose in life) are strongly correlated with prior measures, others (positive relations with others, autonomy, and personal growth) are not. Factor analysis supports the distinctiveness of these new dimensions. Age and sex differences are also examined, revealing higher scores for middle-aged adults on autonomy, environmental mastery, purpose in life, and personal growth, and higher scores for women on positive relations with others and personal growth. The study concludes by suggesting that current measures of well-being do not fully capture the theoretical emphasis on positive functioning, particularly in areas like positive relations with others, autonomy, and personal growth.