blastoderm: the germinal membrane from which the organs of the embryo are formed. Explanation of Terms Used in Entomology John. B. Smith He it was who introduced the terms Keimhaut (blastoderm) and Keimblatt (germ-layer).
Child Study. Child study, also called paidology or experimental pedagogy, was the attempt to apply the methods of modern science to the investigation of children in order to discover the laws of normal child development.
Child Psychology, often referred to as Child Development, examines the psychological aspects that occur during childhood (from birth to puberty). An incredible number of changes occur during childhood, especially during infancy, which lasts from birth to age two. In particular, there are massive advances in physical, cognitive, and psychosocial development...all of which are key areas of study within child psychology.