can be found in the section on the inheritance character of intelligence model which is included in the online book. The geneticist must try to find out which of the many parts of the environment may affect. All these changes occur from birth, throughout a persons life, into and during old age. Anal stage, Behaviorism, Classical conditioning 813 Words 3 Pages Open Document Infancy and Early Childhood Development Infancy and Early Childhood Development Samantha Trudeau PSY/375 June 27, 2011 Heather Harrison Infancy and Early Childhood Development An infants brain is something quite similar to a blank video. Abuse, Anger, Anxiety 950 Words 3 Pages Open Document Considerations for Child Development - Middle Childhood Physical development is concerned with the biological changes of the body and the brain. The second stage is early childhood (2 to 6 years). Down syndrome is characterized by facial characteristics including a round face, slanted eyes and a thick tongue.