From the Universe of Knowledge to the Universe of Concepts: The Structural Revolution in Classification for Information Retrieval

During the twentieth century, bibliographic classification theory underwent a structural revolution. The first modern bibliographic classifications were top-down systems that started at the universe of knowledge and subdivided that universe downward to minute subclasses. After the invention of faceted classification by S.R. Ranganathan, the ideal was to build bottom-up classifications that started with the universe of concepts and built upward to larger and larger faceted classes. This ideal has not been achieved, and the two kinds of classification systems are not mutually exclusive. This paper examines the process by which this structural revolution was accomplished by looking at the spread of facet theory after 1924 when Ranganathan attended the School of Librarianship, London, through selected classification textbooks that were published after that date. To this end, the paper examines the role of W.C.B. Sayers as a teacher and author of three editions of The Manual of Classification for Librarians and Bibliographers. Sayers influenced both Ranganathan and the various members of the Classification Research Group (CRG) who were his students. Further, the paper contrasts the methods of evaluating classification systems that arose between Sayers’s Canons of Classification in 1915–1916 and J. Mills’s A Modern Outline of Library Classification in 1960 in order to demonstrate the speed with which one kind of classificatory structure was overtaken by another.

The Circle of Security Parenting Program (COS-P): A Randomized Controlled Trial of a Low Intensity,Individualized Attachment-Based Program With at-Risk Caregivers

The Circle of Security–Parenting Intervention (COS-P; Cooper et al., 2009) is a psychoeducational program for caregivers of young children that has been widely disseminated. The program is founded in attachment theory and relies on computer-delivered content and parent reflection and discussion to teach concepts of safety and security to promote better caregiver-child relationships and child wellbeing. The present study is a randomized controlled trial of COS-P, individually delivered to 85 Australian caregivers (51 COS-P, 34 waitlist control) who reported parenting distress and child disruptive behaviors. Caregivers completed a baseline assessment and repeated the assessment after completion of COS-P or 8 weeks on the waitlist. Caregivers completed surveys to report child symptoms, and parenting stress, anxious and avoidant attachment, reflective functioning, parenting practices, and depressive symptoms. No differences in COS-P vs. waitlist participants were found at baseline. Analyses of complete data (35 COS-P, 25-26 waitlist) revealed a greater decline in caregivers’ attachment anxiety and negative parenting relative to waitlist, but only attachment anxiety in intent-to-treat analyses. Other improvements were found, but these extended to both the COS-P and waitlist conditions and did not differ between conditions. Overall, effects of COS-P were small and rarely significant, suggesting the need to consider alternative programs that have evidence of effectiveness when providing services to at-risk families.