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.
Case Study. Case Study: + add to my flashcards cite this term. A case study is one type of observational data collection technique in which one individual is studied in-depth in order to identify behavioral, emotional, and/or cognitive qualities that are universally true, on average, of others. Case studies often include face-to-face interviews, paper and pencil tests, and more.