When making an in-depth study of the interaction of biological and environmental factors in determining personality, on which of the following main bases is the fundamental difference between William Herbert Sheldon's Somatotype Theory and Eduard Spranger's Value-Based Typology clarified?

Understanding Personality Theories: Sheldon vs. Spranger

William Herbert Sheldon, under his somatotype theory, considered physical body types (endomorphy, mesomorphy, and ectomorphy) as the core basis of personality, which are largely determined by biological and genetic factors.

In contrast, the German philosopher and psychologist Eduard Spranger classified human personality based on cultural and value-based orientations (such as theoretical, economic, artistic, social, political, and religious values), which are primarily influenced by socio-environmental factors.

• Sheldon: Focuses on biological and somatotypic structures.
• Spranger: Focuses on socio-cultural values and life philosophies.