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The height and intelligence of children
Department
of Orthodontic Edited
Abstracts
and Reviews
by
DR. J. A. SALZMANN, NEW YORK CITY All communications ance of articles
concerning further information about abstracted material and the acceptor books for consideration in this department should be addressed to Dr. J. A. Salzmann. 654 Madison Avenue, New York City.
The Height and Intelligence
of Children:
Science 92 : 10 (Nov. 29), 1940.
In an address before the meeting of the American Philosophical Society, Dr. Franz Boas, professor emeritus of anthropology at Columbia University, declared that, “Children short for their age had an intelligence quotient markedly under the norm, those tall for their age, one above the norm.” This finding is corroborated by the statistical evidence of another investigator, who found that “children of the same age are the taller, the higher the grade they had attained in school. In other words, their physical and mental development went hand in hand.” Great variability in human stocks, even in fairly closely related groups of individuals, was another point discussed by Dr. Boas. Variable traits included not only the obvious physical characters but also physiologic and mental ones. “The genetic lines composing a race are so varied that the assumption that all members are by heredity endowed with the same physiologic and mental characteristics is as absurd as to claim that they are physically alike.”
The First Permanent British
Molar Again.
Dental Journal
By A. A. Wilkinson, 64: 269 (Oct. 15)) 1940.
NIB., Ch.B., L.D.S.
According to Wilkinson, on completion of the dentition more than 99 per cent of Anglo-Saxon mouths arc overcrowded, however much expansion is (lone. Therefore, routine treatment should be directed toward the prevention of overcrowding and its results by reducing the number of teeth that the adult mouth is allowed finally to accommodate. The results of overcrowding in the mouth, says Wilkinson, are irregularity of the teeth, which is the cause of malocclusion, with possibly impacted third molars to follow, caries, especially interproximal caries, and pyorrhea. Wilkinson has been advising all parents to allow the removal of four of their children’s permanent teeth, in order to prevent crowding and caries. He has done this, in several hundred cases, and never had subsequent reason to doubt the wisdom of this plan. In all cases where permission to extract was refused by the parents, the results of overcrowding manifested themselves. By a process of elimination, Wilkinson came to the conclusion that extrac. tion of the first permanent molars gave a result in nearly every case that was so strikingly different from that achieved by any other procedure, that he decided to adopt this treatment as a routine unless there were strong contraindications. 156
of Orthodontic Edited
Abstracts
and Reviews
by
DR. J. A. SALZMANN, NEW YORK CITY All communications ance of articles
concerning further information about abstracted material and the acceptor books for consideration in this department should be addressed to Dr. J. A. Salzmann. 654 Madison Avenue, New York City.
The Height and Intelligence
of Children:
Science 92 : 10 (Nov. 29), 1940.
In an address before the meeting of the American Philosophical Society, Dr. Franz Boas, professor emeritus of anthropology at Columbia University, declared that, “Children short for their age had an intelligence quotient markedly under the norm, those tall for their age, one above the norm.” This finding is corroborated by the statistical evidence of another investigator, who found that “children of the same age are the taller, the higher the grade they had attained in school. In other words, their physical and mental development went hand in hand.” Great variability in human stocks, even in fairly closely related groups of individuals, was another point discussed by Dr. Boas. Variable traits included not only the obvious physical characters but also physiologic and mental ones. “The genetic lines composing a race are so varied that the assumption that all members are by heredity endowed with the same physiologic and mental characteristics is as absurd as to claim that they are physically alike.”
The First Permanent British
Molar Again.
Dental Journal
By A. A. Wilkinson, 64: 269 (Oct. 15)) 1940.
NIB., Ch.B., L.D.S.
According to Wilkinson, on completion of the dentition more than 99 per cent of Anglo-Saxon mouths arc overcrowded, however much expansion is (lone. Therefore, routine treatment should be directed toward the prevention of overcrowding and its results by reducing the number of teeth that the adult mouth is allowed finally to accommodate. The results of overcrowding in the mouth, says Wilkinson, are irregularity of the teeth, which is the cause of malocclusion, with possibly impacted third molars to follow, caries, especially interproximal caries, and pyorrhea. Wilkinson has been advising all parents to allow the removal of four of their children’s permanent teeth, in order to prevent crowding and caries. He has done this, in several hundred cases, and never had subsequent reason to doubt the wisdom of this plan. In all cases where permission to extract was refused by the parents, the results of overcrowding manifested themselves. By a process of elimination, Wilkinson came to the conclusion that extrac. tion of the first permanent molars gave a result in nearly every case that was so strikingly different from that achieved by any other procedure, that he decided to adopt this treatment as a routine unless there were strong contraindications. 156