Psycho-sexual development of human personality has been emphasized by:

Concept: Psychosexual development theory holds that personality is formed through a fixed sequence of stages, each centred on a different erogenous zone (oral, anal, phallic, latency, genital); unresolved conflict at any stage produces a lasting fixation that shapes adult personality.

Application: The stem describes exactly this stage-wise, drive-centred account of personality formation. This framework is the foundation of Freud's psychoanalytic theory — personality is built by working through these psychosexual stages in childhood.

Cross-check: None of the other named theorists proposed a stage theory of psychosexual development:

• Comenius is known for advocating universal, graded schooling and illustrated textbooks (Orbis Pictus) — his focus is curriculum and teaching method.

• Hall is associated with the recapitulation theory of development and characterising adolescence as a period of 'storm and stress' — not a psychosexual stage model.

• Hollingworth's work concentrates on gifted and exceptional children and on questioning assumptions about adolescent turbulence — not personality's psychosexual formation.

Result: Freud is the theorist who emphasised the psychosexual development of human personality.