1. Allen, G., and Baroff, G. S. Mongoloid twins and their siblings. Acta genet.

Statist, med., 1955, 5, 294–326.

2. Anderson, V. V., and Fearing, F. M. A study of the careers of three hundred

twenty-two feebleminded persons. N. v.: Nat. Comm. Ment. Hyg., 1923.

3. Asher, Cecile, and Roberts, J. A. Fraser. A study of birthweight and intelligence.

Brit. J. soc. Med., 1949, 3, 56–68.

4. Badham, J. N. The outside employment of hospitalized mentally defective

patients as a step towards resocialization. Amer. J. ment. Def, 1955, 59, 666–680.

5. Bailer, W. R. A study of the present social status of a group of adults who,

when they were in elementary schools, were classified as mentally deficient. Genet. Psychol. Monogr., 1936, 18, 165–244.

6. Bell, H. M. Matching youth and jobs. Washington, D. C: Amer. Coun. Educ,


7. Benda, C. E. Mongolism and cretinism. (2nd Ed.) N. Y.: Grune & Stratton,


8. Benda, С. Е. Developmental disorders of mentation and cerebral palsies. N. Y.:

Grune & Stratton, 1952.

9. Benda, С. Е. Psychopathology of childhood. In L. Carmichael (Ed.),

Manual of child psychology. (Rev. Ed.) N. Y.: Wiley, 1954, Pp. 1115–1161.

10. Benda, C. E., and Farrell, M. J. Psychopathology of mental deficiency in

children. In P. H. Hoch and J. Zubin (Eds.), Psychopathology of childhood. N. Y.: Grune & Stratton, 1955.

11. Binet, A., and Simon, Th. The intelligence of the feebleminded. (Transl. By

E. S. Kite) Vineland, N. J.: Training School Publ., No. 11, 1916.

12. Birch, J. W., and Matthews, J. The hearing of mental defectives: its

measurement and characteristics. Amer. J. ment. Def, 1951, 55, 384–393.

13. Bobroff, A. Economic abjustment of 121 adults, formerly students in

classes for mental retardates. Amer. J. ment. Def, 1956, 60, 525–535.

14. Book, J. A., Grubb, R., Engleson, G., and Larson, С A. RH-

incompatibility and mental deficiency. Amer. J. hum. Genet., 1949, 1, 66–78.

15. Bradway, K. P. Paternal occupational intelligence and mental deficiency.

J. appl. Psychol., 1935, 19, 527–542.

16. Brand, H., Benoit, E. P., and Ornstein, G. N. Rigidity and

feedlemindedness: an ezamination of the Kounin-Lewin theory. /. clin. Psychol., 1953, 9, 375–378.

17. Burr, Emily T. The vocational adjustment os mwntal defectives. Psychol.

Clin., 1931, 20, 55–64.

18. Burt, C. The causes and treatment of backwardness. N. Y.: Library, 1953.

19. Cantor, G. N., and Stacey, C. L. Manipulative dexterity in mental

defectives. Amer. J. ment. Def, 1951, 56, 401–410.

20. Cassidy, Viola M., and Phelps, H. R. Postschool adjustment of slow learning

children. Columbus, Ohio: Ohio State Univer. Bur. Of Spec. And Adult Educ, 1955.

21. Cattell, R. B. Classical and standard score IQ standardization of the

I.P.A.T. Cuiture-Free Intelligence Scale 2. /. consult. Psychol., 1951, 15, 154–159.

22. Chamberlain, Naomi H., and Moss, Dorothy H. The three R's for the

retarded (repetition, relaxation, and routine); a program for training the retarded child at home. N. Y.: Nat. Assoc. For Retarded Children, 1954.

23. Charles, D. C. Ability and accjmplishment of persons earlier judged

mentally deficient. Genet. Psychol. Monogr., 1953, 47, 3—71.

24. Cianci, V. Home supervision of mental deficients in New Jersey. Amer. J.

ment. Def, 1947, 51, 519–524.

25. Clarke, A. D. В., and Clarke, A. M. Cognitive changes in the feebleminded.

Brit. J. Psychol., 1954, 45, 173–179.

26. Doll, E. A. The essentials of an inclusive concept of mental deficiency.

Amer, J. ment. Def, 1941, 46, 214–219.

27. Doll, E. A. The measurement of social competence. Minneapolis, Minn.:

Educ. Test Bur., 1953.

28. Engel, Anna M. Employment of the mentally retarded. Amer. J. ment.

Def, 1952, 57, 243–267.

29. Engler, M. Mongolism (peristatic amentia). Baltimore: Williams & Wilkins,


30. Esquirol, J. E. D. Des maladies mentales considerees sous les rapports

medical, hygienique, et medico-legal. Paris: Bailliere, 1838.

31. Fairbank, R. E. The subnormal child-seventeen years after. Ment. Hyg.,

1933, 17, 177–208.

32. Fisher, R. A. The Rhesus factor: a study in scientific method. Amer.

Scient., 1947, 35, 94-102, 113.

33. Glasser, F. В., Jacobs, M., and Schain, R. The relation of Rh to mental

deficiency. Psychiat. Quart., 1951, 25, 282–287.

34. Goddard, H. H. The height and weight of feebleminded children in American

institutions. /. nerv. Ment. Dis., 1912, 39, 217–235.

35. Goodenoudh, Florence L. Review of "Changes in personal, social, and

intellectual behavior of children originally classified as feebleminded", by Bernardine G. Schmidt. /. abnorm. Soc. Psychol., 1949, 44, 135–139.

36. Guertin, W. H. Differential characteristics of the pseudofeebleminded. Amer.

J. ment. Def, 1950, 54, 394–398.

37. Hackel, E. Blood factor incompatibility in the etiology of mental deficiency.

Amer. J. hum. Genet., 1954, 6, 224–240.

38. Halperin, S. L. A clinico-genetical study of mental defect. Amer. J. ment.

Def., 1945, 50, 8-26.

39. Hegge, T. G. The occupational status of higher-grade mental defectives in

the present emergency. Amer. J. ment. Def., 1944, 49, 86–98.

40. Heiser, K. F. Our backward children. N. Y.: Norton, 1955.