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Home/Anthropology/Mains PYQ/2017/Paper I/Human Genetics & Human Biology
UPSC MainsAnthropology Optional Paper I 2017 15 Marks Model Answer Available

Sheldon’s Method of Somatotyping — 2017 Paper I

Question · 2017 · Paper I · 15 Marks

Discuss Sheldon's method of somatotyping.

Model Answer

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Approach

  • Demand of Question:Explain Sheldon's three-component somatotype method, its procedure and theoretical assumptions, and critically assess its limitations.
  • Structuring the Response:Introduce Sheldon; explain endomorphy, mesomorphy and ectomorphy and the 1-7 rating; describe photographic assessment and constitutional psychology; end with criticism and Heath-Carter refinement.
  • Key Dimensions to Cover:W.H. Sheldon; Varieties of Human Physique (1940); endomorphy, mesomorphy, ectomorphy; 7-point ratings; somatotype; constitutional psychology; Heath-Carter anthropometric method.

Model Answer

Introduction Somatotyping is a taxonomic system used to classify human physique. Introduced by psychologist and anthropologist W.H. Sheldon in his 1940 book The Varieties of Human Physique, it represented a revolutionary shift from sorting bodies into rigid, mutually exclusive types (like Kretschmer's typology) to measuring bodies along continuous dimensions.

Body

  1. The Three Somatotype ComponentsSheldon based his classification on the relative development of the three embryonic germ layers. Every human possesses a combination of these three components:
  • Endomorphy (derived from Endoderm): Represents relative softness, roundness, and visceral/fat development.
  • Mesomorphy (derived from Mesoderm): Represents relative muscularity, skeletal robustness, and heavy bone structure.
  • Ectomorphy (derived from Ectoderm): Represents relative linearity, slenderness, fragility, and low body mass.
  1. The Rating System (The Somatotype)Sheldon quantified these components on a 7-point scale(1 being the lowest, 7 the highest). A person's somatotype is always expressed as a three-digit number in the strict order of: Endomorphy – Mesomorphy – Ectomorphy.
  • Extreme Endomorph: 7-1-1 (Very round, low muscle, low linearity).
  • Extreme Mesomorph: 1-7-1 (Highly muscular, low fat, low linearity).
  • Extreme Ectomorph: 1-1-7 (Highly linear, very thin, low muscle).
  • Average Build: 4-4-4.
  1. Methodology and Constitutional Psychology
  • Photoscopic Method: Sheldon used standardized photographs of subjects from three angles (front, side, rear) and visually graded them alongside limited anthropometric measurements (like height and weight).
  • Temperament Link: In The Varieties of Temperament (1942), Sheldon controversially linked these body types to fixed psychological traits:
    • Endomorphs à Viscerotonia (Relaxed, sociable, loves food).
    • Mesomorphs à Somatotonia (Energetic, assertive, aggressive).
    • Ectomorphs à Cerebrotonia (Introverted, anxious, intellectual).
  1. Criticisms of Sheldon's Method
  • Subjectivity: The photographic method relied heavily on the researcher's visual judgment, leading to poor reproducibility.
  • Biological Determinism: His linking of body type to personality and criminality (claiming mesomorphs were predisposed to delinquency) was heavily criticized as unscientific and dangerously deterministic.
  • Assumption of Permanence: Sheldon wrongly believed a person's somatotype was genetically fixed and unchanging. He ignored how aging, severe malnutrition, or intense athletic training drastically alter a person's physique over time.
  1. The Heath-Carter RefinementTo fix Sheldon's methodological flaws, anthropologists Barbara Heath and J.E.L. Carter (1967)developed the Heath-Carter method. They replaced subjective photos with strict anthropometric measurements (skinfold thickness, bone breadths, and limb circumferences). They also removed the rigid 7-point limit (allowing open-ended scales) and discarded the assumption of permanence, recognizing that somatotypes can change.

Conclusion Sheldon's enduring contribution to physical anthropology lies in introducing a continuous, dimensional approach to human physique, rather than his flawed constitutional psychology. Today, refined methods like Heath-Carter are extensively used in kinanthropometry, sports science, and ergonomics, appropriately treating somatotype as a measurable and modifiable phenotypic trait rather than a fixed biological destiny.

 

2026 Genetic polymorphism and natural selection. 2026 Numerical chromosomal aberrations can be due to abnormalities in autosomes as well as sex chromosomes. Elaborate in terms of the effects these have on human body, giving suitable examples. 2026 Distinguishing features of nuclear and mitochondrial DNA. 2026 How would you find out that a particular disease/disorder is inherited and, if so, in which manner? Elaborate with suitable examples.

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