The humanistic approach emerged in reaction to more pessimistic theories and focuses on free will, personal growth, and fulfilling one's potential. Key figures Carl Rogers and Abraham Maslow believed people are inherently good and strive for self-actualization. Rogers described the ideal self and congruence between real and ideal selves as important for growth. Maslow's hierarchy of needs proposes basic needs must be met before pursuing higher-level growth needs and self-actualization. However, the humanistic approach lacks empirical evidence and standardization, and its focus on subjectivity makes research difficult.