DOCUMENTATION NOTE: A NOTE ON THE TREATMENT OF SOCIAL PSYCHOLOGY IN THE UNIVERSAL DECIMAL CLASSIFICATION UNDER THE INFLUENCE OF THE DOCTRINE OF INSTINCT

The field of social psychology has only been cursorily glanced at by the critics of UDC, including Miss Kyle who took 301.151 for the whole of socio‐psychology and overlooked the fact that many of its subordinate concepts remain scattered all over the facet 30 sociology. The English abridged edition, in comparison with the French 2nd edition, offers a more restricted idea plane under 301.151 shared by two terms: ‘social psychology’ and ‘instinct’ eliminating the other ‘qualités socialement importantes d'individus’. The remaining terms transposed, too, having offered social psychology the first position in the sequence. Thus, the former may be assumed to have either an equal or a superior status or even the terms may be supposed to be nearly identical. The last one particularly has its base on the twenty‐one subclasses enumerated under 301.151 which represent nothing but varied instincts. These instincts had been respected once as the only basic units of social psychology similar to the definitely agreed upon units of any firm sciences.