Work on Familial Learning Difficulties Constitutes Dr Davenport's examplar pedigree of a family showing learning difficulties through successive generations, papers relating to A H P Kirby's study of children in care institutions for those with learning difficulties, and the family histories of children attending "mentally defective schools" in London, compiled by J Stewart. The term "mentally defective" has been replaced by "learning difficulties" except where it is quoted verbatim in the primary source as a noun or adjective. In such cases the original term is enclosed in quotation marks or followed by the transcription note (sic). 1912-1916