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.
It is an educational and parenting technique recommended by some pediatricians and developmental psychologists as an effective form of child discipline. Often a corner (hence the common term corner time) or a similar space where the child is to stand or sit during time-outs is designated.