The Rig-Veda, Zend-Avesta and Gathas

This edition represents the most famous work of the German psychologist and physiologist, the founder of developmental psychology, Thierry William Preyer (1841–1897), which brought him wide recognition ("The Soul of the Child", 1882), in which he described observations of his son from birth to the age of three. The book is distinguished by a strictly scientific approach and illuminates the stages of development of the senses, motor skills, will, thinking, and speech in a child. This work by T.W. Preyer laid the foundation for systematic research aimed at establishing the basic laws and characteristics of the formation of a person's personality from the earliest years. For a wide circle of child psychologists and physiologists.