The theme of the final paper is psychosocial personality development in children by Erikson. The theoretical part of the final paper explains the term personality, what is psychosocial theory of personality, describes psychosocial development of an individual through eight stages of development with the focus on the first four stages. A child up to six years of age goes through four stages of development (trust vs. mistrust, autonomy vs. shame and doubt, initiative vs. guilt, industry vs. inferiority). In the paper there is mention of crises that may occur in specific stages of development and the attachment of the mother to the child as a factor that may affect the appearance of crises in psychosocial development of the child. A survey was conducted amongst 54 parents of preschoolers. The aim of the survey was to find out in which direction the psychosocial development of the child is developing (positive or negative), what kind of attachment the child has developed and whether there are sex differences in psychosocial personality development.