. Backward and feeble-minded children; clinical studies in the psychology of defectives, with a syllabus for the clinical examination and testing of children . are types which are much dis-cussed and which are of muchinterest to science, are of com-paratively rare occurrence. Dur-ing the year the institution hasreported but four cretins from theentire population, and one ofthese has recently died. Thus far the Mongolians havetoted pretty uniformly to a men-tal age of four or five years, bothat Lincoln and at Yineland. Ofcourse, many exceptions to thiswill doubtless be found. TheMongolians are
. Backward and feeble-minded children; clinical studies in the psychology of defectives, with a syllabus for the clinical examination and testing of children . are types which are much dis-cussed and which are of muchinterest to science, are of com-paratively rare occurrence. Dur-ing the year the institution hasreported but four cretins from theentire population, and one ofthese has recently died. Thus far the Mongolians havetoted pretty uniformly to a men-tal age of four or five years, bothat Lincoln and at Yineland. Ofcourse, many exceptions to thiswill doubtless be found. TheMongolians are steady, tractable, and are probablymi ire numerous than is indicatedby institution records, since theycan be easily managed at have a pretty high mortal-ity as well, due to the generally unfinished condition oftheir organs and tissues. Twelve and a half per cent, or one-eighth of all new ad-. Eig. 3.—Typical cretin ininfancy. Great progresssince under treatmentwith thyroid extract. CLASSIFICATION AND TERMINOLOGY 13 missions, were stated to have had meningitis or brain form a group of cases which usually show symptomspeculiar to this causation, and they make little merit a larger share of attention and study than theyhave usually received, as compared, for example, with theless numerous Mongolians and cretins.
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