Dynamics of Adoptee's Life Long Problems
Toussieng (1958) states; the adolescence of the adopted child seems to be a particularly difficult one because it is harder for adoptive adolescents to accept their rebellion against the adoptive parents, to give them up as love objects. Furthermore, I have now seen a number of cases in which children in adolescence start roaming around almost aimlessly, though some times they are seeking someone or some thing. They seem to be seeking the fantasised "good real parents".
Last, Yet Most Important Point:
Benedek (1938) presents an important concept regarding the development of confidence based on mother-child relationship. This is the area so sensitive in these adopted children and which can be found to under-lie so many of their disturbances.