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.
James Elicker,â PhD, is associate professor of human development and family studies at Purdue University. His research focuses on young childrenâs development in the context of early childhood programs. He cofounded and codirects the InfantâToddler Specialists of Indianaâs professional development network.