EMBRYONIC STAGE By N., Sam M.S. - 26 In humans it is about the 6 week period where the 3 layered embryo develops. EMBRYONIC STAGE: "The embyonic stage is seen from about the 2nd week of pregnancy to the 3rd month." Related Psychology Terms ADOLESCENCE (Theories) PRENATAL DEVELOPMENT Piaget’s Theory of Cognitive Development ORAL CHARACTER PMDD: Can It Be Cured? GENERAL ADAPTATION SYNDROME Characteristics and Behaviors of Effective Counseling CIVILIAN CATASTROPHE REACTIONS FETAL STAGE DELAYED REACTION Cite this page: N., Sam M.S., "EMBRYONIC STAGE," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/embryonic-stage/ (accessed June 27, 2022).