Issue Supplement18 articlesForewordp. iiiTheodore ShapiroThe Development Of The Ego: Insights From Clinical Work With Infants And Young Childrenp. 3Stanley I. GreenspanA Theory Of Motivational-functional Systems As Psychic Structuresp. 57Joseph D. LichtenbergPsychic Structure Formation: The Complementary Roles Of Affects, Drives, Object Relations, And Conflictp. 73Phyllis TysonThe Concept Of Adult Psychic Structure