Three males with Turner‐phenotype have been studied. There were no indications of inheritance of the disorder. The group was too small and too selected to give any indication of whether there are any special characteristics of personality development in males with Turner‐phenotype. One patient was mentally retarded and the other two had intelligences in the lower part of the normal range. No eytogenetic aberrations were found, but it is concluded that further cytogenetic studies, using banding technique with analysis of chromosomes in a large number of cells, are needed in order to look for possible X or Y chromosome deletions or translocations to autosomes. Such deletions or translocations might explain the similarity with Turner's syndrome in females as well as the indications of inheritance of different types found by some authors and the lack of inheritance found by others and in the present st