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.
The Informed Consent Process with Children. Children are persons who have not attained the legal age for consent to treatments or procedures involved in research; in New York State anyone under the age of 18 is considered a child. When children are involved in a research activity it is necessary to obtain their assent and the permission of their parents. Assent is defined as a child's affirmative agreement to participate in research.