SSD=Social situation of development. On Fri, Mar 20, 2015 at 8:24 PM, Annalisa Aguilar <annalisa@unm.edu> wrote: > Would someone be so kind as to unpack the acronym "SSD?" > > TQ, > > Annalisa > > -- It is the dilemma of psychology to deal as a natural science with an object that creates history. Ernst Boesch.