Editorial Brief *

Kallmann F. J. (1946). The genetic theory of schizophrenia: an analysis of 691 schizophrenic twin index families. Amer. J. Psychiat., 103: 309.

Rosanoff A. J. Handy L. M. Plesset I. R. Brush S. (1934). The etiology of so-called schizophrenic psychoses with special reference to their occurrence in twins. Amer. J. Psychiat., 91: 247.

Slater E. (1953). Psychotic and neurotic illnesses in twins. Med. Res. Counc. spec. Rept. Ser. No. 278, London: Her Majesty's Stationery Office.

Essen-Moller E. (1941). Psychiatrische Untersuchungen an einer Serie von Zwillingen. Acta psychiat. (Kbh.). Suppl. 23.

Luxenburger H. (1928). Vorlaufiger Bericht uber psychiatrische Serienuntersuchungen an Zwillingen. Z. ges. Neurol. Psychiat., 116: 297.

Inouye E. (1961). Similarity and dissimilarity of schizophrenia in twins. Proc. Third World Congress Psychiatry, Montreal, 1: 524–30. University of Toronto Press, and McGill University Press.

Rosenthal D. (1959). Some factors associated with concordance and discordance with respect to schizophrenia in monozygotic twins. J. Nerv. Ment. Dis., 129: 1.

Rosenthal D. (1960). Confusion of identity and the frequency of schizophrenia in twins. Arch. Gen. Psychiat., 3: 297.

Rosenthal D. (1961). Sex distribution and the severity of illness among samples of schizophrenic twins. J. Psychiat. Res., 1: 26.

Rosenthal D. (1962a). Problems of sampling and diagnosis in the major twin studies of schizophrenia. Ibid., 1: 116.

Rosenthal D. (1962b). Familial concordance by sex with respect to schizophrenia. Psychol. Bull., 59: 401.

Tienari P. (1963). Psychiatric illnesses in identical twins. Acta, psychiat. (Kbh.). Suppl. 171.

Kringlen E. (1964). Schizophrenia in male monozygotic twins. Acta psychiat. (Kbh). Suppl. 178.

Gottesman I. I. Shields J. (1966). Schizophrenia in Twins: 16 years’ consecutive admissions to a psychiatric clinic. Brit. J. Psychiat., 112: 489.

Kringlen E. Paper presented at Fourth World Congress of Psychiatry, Madrid. Not yet published.

Fischer M. Paper presented at Fourth World Congress of Psychiatry, Madrid. Not yet published.

Jackson D. D. (1960). A Critique of the Literature on the Genetics of Schizophrenia. In Etiology of schizophrenia, Jackson D. D. (ed.) Basic Books, New York.

Juel-Nielsen N. (1964). Individual and environment. A psychiatric-psychological investigation of monozygotic twins reared apart. Acta psychiat. scand. 40, suppl. 183.

Craike W. H. Slater E. (1945). Folie a deux in uniovular twins reared apart. Brain, 68: 213.

Kallmann F. J. (1938). The Genetics of Schizophrenia. J. J. Augustin. New York. Pp. 207–211.

Shields J. (1962). Monozygotic Twins. London. Oxford University Press.

Kallmann F. J. Roth B. (1956). Genetic aspects of preadolescent schizophrenia. Amer. J. Psychiat., 112: 599–606.

Kaij L. (1960). Studies on the etiology and sequels of abuse of alcohol. Diss. Lund.

Heston L. L. (1966). Psychiatric disorders in foster home reared children of schizophrenic mothers. Br. J. Psychiat., 112: 819.

Rosenthal D. Winder P. Paper presented at Fourth World Congress of Psychiatry, Madrid. Not yet published.

Witkin H. A. Lewis H. B. (1965). The relation of experimentally induced presleep experiences to dreams. J. Amer. psychoanal. Assoc., 13: 819.

Berger R. J. (1963). Experimental modification of dream content by meaningful verbal stimuli. Brit. J. Psychiat., 109: 722.

Uliman M. (1966). An experimental approach to dreams and telepathy. Arch. gen. Psychiat., 14: 605.

Dement W. C. (1960). The effect of dream deprivation. Science, 131: 1705.

Cohen H. B. Dement W. C. (1965). Sleep: changes in threshold to electroconvulsive shock in rats after deprivation of “paradoxical” phase. Science, 150: 1318.

Cohen H. B. Dement W. C. (1966). Sleep: suppression of rapid eye movement phase in the cat after electroconvulsive shock. Science, 154: 396.

Pivik T. Foulkes D. (1966). “Dream deprivation”: effects on dream content. Science. 153: 1282.

Gottschalk L. A. Stone W. N. Gleser G. C. Iacono J. M. (1966). Anxiety levels in dreams: relation to changes in plasma free fatty acids. Science, 153: 654.

Karacan I. Goodenough D. R. Shapiro A. Starker S. (1966). Erection cycle during sleep in relation to dream anxiety. Arch. gen. Psychiat., 15: 183.

Nowlin J. B. Troyer W. G. Collins W. S. Silverman G. Nichols C. R. McIntosh H. D. Estes E. H. Bogdonoff M. D. (1965). The association of nocturnal angina pectoris with dreaming. Ann. intern. Med., 63: 1040.

Oswald I. Thacore V. R. (1963). Amphetamine and Phenmetrazine addiction: physiological abnormalities in the abstinence syndrome. Brit. med. J., 2: 427.

Oswald I. Priest R. G. (1965). Five weeks to escape the sleeping pill habit. Brit. med. J., 2: 1093.

Oswald I. Ashcroft G. W. Berger R. J. Eccleston D. Evans J. I. Thacore V. R. (1966). Some experiments in the chemistry of normal sleep. Brit. J. Psychiat., 112: 391.

Evans J. I. Oswald I. (1966). Some experiments in the chemistry of narcoleptic sleep. Brit. J. Psychiat., 112: 401.

Muzio J. N. Roffwarg H. P. Kaufman E. (1966). Alterations in the nocturnal sleep cycle resulting from LSD. Electroenceph. clin. Neurophysiol., 21: 313.

McGhie A. (1966). The subjective assessment of sleep patterns in psychiatric illness. Brit. J. med. Psychol., 39: 221.

Commonwealth Director-General of Health (1966). Annual Report, 1965–66, Canberra.