IV. DEVELOPMENTAL COURSE OF DEPRIVATION-SPECIFIC PSYCHOLOGICAL PATTERNS: EARLY MANIFESTATIONS, PERSISTENCE TO AGE15, AND CLINICAL FEATURES Jana Kreppner, n Robert Kumsta, n Michael Rutter, n Celia Beckett, Jennifer Castle, Suzanne Stevens, and Edmund J. Sonuga-Barke Chapter III (Kumsta et al.) presented findings on the designation of deprivation-specific psychological patterns (DSPs) and on the testing of the internal and external validity of the concept of a DSP. The starting point was the meeting of particular criteria at age 6 and persistence of impairment to age 11. In this chapter, we turn to our findings on the developmental course of DSPs. Because the postulate was that the DSP resulted from profound institutional deprivation, it is necessary to begin with findings on what the children were like at the time of leaving institutional care. The evidence is relevant to scientific question about continuities and discontinuities in in- dividual differences in the children’s functioning in the institutions and the manifestation of DSPs that persisted at least up to age 11Fsome 71 years after adoption. It is also relevant to the practical question of whether pro- spective adoptive parents could identify children in the institutions who were likely, or unlikely, to show persisting DSPs postadoption. We next turn to the features of the four postulated DSPs between the ages of 6 and 11 yearsFstarting with quasi-autism (Q-A). The features as shown at age 6 were described in chapter III (Kumsta et al.) and will not, therefore, be repeated here. The emphasis is on both continuities and dis- continuities (including change of pattern) over this age period. Chapter III (Kumsta et al.) indicated the criteria used for persistence to age 11, and here, by contrast, we focus on a qualitative description of what the children were like. In the case of the children with Q-A, we were able to use the detailed clinical assessments undertaken by M. R. together with the sys- tematic ADOS and ADI-R findings. In addition, we have detailed findings on mental health and special educational service usage. In order to focus on MONOGRAPHS OF THE SOCIETY FOR RESEARCH IN CHILD DEVELOPMENT n Joint first authorship. 79