The Somatotypes of Sheldon.

William Sheldon (1898-1977) was an American psychologist who observed the variety of human bodies and temperaments.
For his study of the human physique, Dr. Sheldon started with 4,000 photographs of college-age men, which showed front, back and side views. By carefully examining these photos he discovered that there were three fundamental elements which, when combined together, made up all these physiques or somatotypes.

• Endomorphy is centered on the abdomen, and the whole digestive system.
• Mesomorphy is focused on the muscles and the circulatory system.
• Ectomorphy is related to the brain and the nervous system.

We have all three elements in our body, just as we all have digestive, circulatory and nervous systems. No one is simply an endomorph without having at the same time some mesomorphy and ectomorphy, but we have these components in varying degrees.

Sheldon wanted to explore the link between body and temperament.
Temperament is body type in action. Sheldon's procedure in looking for the basic components of temperament was much like the one he used in discovering the body type components.He interviewed in depth several hundred people and tried to find traits which would describe the basic elements of their behavior. He found there were three basic components which he called viscerotonia, somatotonia and cerebrotonia, and eventually named endotonia, mesotonia and ectotonia.

• Endotonia is seen in the love of relaxation, comfort, food and people.
• Mesotonia is centered on assertiveness and a love of action.
• Ectotonia focuses on privacy, restraint and a highly developed self-awareness.

THE EXTREME ENDOMORPH - ROUNDNESS
THE EXTREME ENDOTONIC - FRIENDLINESS

In this physique the body is round and soft, as if all the mass had been concentrated in the abdominal area. In fact, the large intestine of an extreme endomorph can be two or three times the length of that of an ectomorph.The arms and legs of the extreme endomorph are short and tapering, and the hands and feet comparatively small, with the upper arms and thighs being hammed and more developed than the lower arms and legs. The body has smooth contours without projecting bones, and a high waist. There is some development of the breast in the male and a fullness of the buttocks. The skin is soft and smooth , and there is a tendency towards premature baldness beginning at the top of the head and spreading in a polished circle. The hair is fine and the whole head is spherical. The head is large and the face broad and relaxed with the features blending into an over-all impression of roundness.

The endotonic shows a splendid ability to eat, digest and socialize. A good deal of his energy is oriented around food, and he enjoys sitting around after a good meal and letting the digestive process proceed without disturbance. Endotonics live far from the upsets and nervous stomachs of the ectotonics. They fall readily to sleep and their sleep is deep and easy; they lie limp and sprawled out and frequently snore.
Endotonics are relaxed and slow-moving. Their breathing comes from the abdomen and is deep and regular. Their speech is unhurried and their limbs often limp. They like sitting in a well-upholstered chair and relaxing. All their reactions are slow, and this is a reflection on a temperament level of a basal metabolism, pulse, breathing rate and temperature which are all often slower and lower than average. The circulation in their hands and feet tends to be poor.

Since the bodies of the endotonics are so focused on the central digestive system, they need and crave social stimulation in order to feel complete on the social level. Groups of people, rather than fatiguing them, stimulate them to the proper level of social interaction.They like people simply because they are people. They have a strong desire to be liked and approved of, and this often leads them to be very conventional in their choices in order not to run the risk of social disapproval.

In summary, they love assimilation both on the physical and social level. They love to eat and digest, to be part of their family and community, to like and be liked and to rest and relax. They crave food and affection and abhor isolation and disapproval. They express affection and approval readily and need both back in kind.



THE EXTREME MESOMORPH - MUSCLES
THE EXTREME MESOTONIC - ACTION
In the extremely mesomorphic physique, there is a squareness and hardness of the body due to large bones and well-defined muscles. The chest area dominates over the abdominal area and tapers to a relatively narrow, low waist. The bones and muscles of the head are prominent as well, with clearly defined cheek bones and a square, heavy jaw. The face is long and broad and the head tends towards a cubical shape. The muscles on either side of the neck create a pyramid-like effect. Both the lower and upper arms and legs are well-developed and the wrists and fingers are heavy and massive. The skin is thick and tends towards coarseness. It takes and holds a tan well and can develop a leathery appearance with heavy wrinkles. The hair is basically heavy-textured, and baldness, when it appears, usually starts at the front of the head.

In mesotonia the muscles are the focus of attention. The mesotonic's muscles seem to have a mind of their own. They are always ready for action, and good posture is natural to them. They get up with plenty of energy and seem tireless. They can work for long periods of time and both need and like to exercise. They like to be out doing things. If they are forced into inactivity they become restless and dejected.

The mesotonic tends to eat his food rapidly and somewhat randomly, often neglecting set meal times.
He shows an insensitivity to pain and a tendency to high blood pressure and large blood vessels.

The mesotonic has no hesitation in approaching people and making known his wants and desires. The tendency to think with his muscles and find exhilaration in their use leads him to enjoy taking chances and risks, even when the actual gain is well-known to be minimal. They can become fond of gambling and fast driving and are generally physically fearless. They can be either difficult and argumentative, or slow to anger, but always with the capacity to act out physically and usually with some sort of history of having done so on special occasions.

This physical drive manifests itself on the psychological level in a sense of competition. The mesotonic wants to win and pushes himself forward. He tends to walk roughshod over the obstacles in his path and the people who stand in the way of his achieving what he wants. On the positive side this is called being practical and free from sentimentality, but on the negative side it is called ruthlessness or obnoxious aggressiveness.

This outward energetic flow makes mesotonics generally noisy. They bustle about doing things and since their inhibitions are low, the attendant noise does not bother them. Their voices carry and sometimes boom out as if speech were another form of exercise. They look older than their chronological age. The extraversion of action that is so strong here goes together with a lack of awareness of what is happening on the subjective level. The quickness with which the mesotonic can make decisions is compensated for by a relative unawareness of the other parts of his personality. He tends to be cut off from his dream life. He likes wide-open spaces and freedom from the restraint of clothes.

THE EXTREME ECTOMORPH - LINEAR
THE EXTREME ECTOTONIC - REFLECTION
The highly ectomorphic physique is fragile and delicate with light bones and slight muscles. The limbs are relatively long and the shoulders droop. In contrast to the compactness of the endomorph and mesomorph, the ectomorph is extended in space and linear. The ribs are visible and delicate and the thighs and upper arms weak. The fingers, toes and neck are long. The features of the face are sharp and fragile, and the shape of the face as a whole is triangular with the point of the triangle at the chin. The teeth are often crowded in the lower jaw which is somewhat receding. The skin is dry. It tends to burn and peel easily and not retain a tan. The relatively great bodily area in relation to mass makes the ectomorph suffer from extreme heat or cold. The hair is fine and fast-growing and sometimes difficult to keep in place. Baldness is rare.

The outstanding characteristic of the ectotonic is his finely-tuned receptive system. His spread-out body acts like a giant antenna picking up all sorts of inputs. Since the whole organism is sensitive to stimulation, the ectotonic develops a series of characteristic strategies by which he tries to cut down on it. He likes to cross his legs and curl up as if he is trying to minimize his exposure to the exterior world. He tries to avoid making noise and being subjected to it. He shrinks from crowds and large groups of people and likes small, protected places.

The ectotonic suffers from a quick onset of hunger and a quick satiation of it. He is drawn to a high protein, high calorie diet, with frequent snacking to match his small digestive system. He has a nervous stomach and bowels. He is a quiet sleeper, but a light one, and he is often plagued by insomnia. He tends to sleep on one side with his legs drawn up, and his sleep, though slow in coming, can be hard to shake off. His energy level is low, while his reactions are fast he suffers from a quasi-chronic fatigue and must protect himself from the temptation to exercise heavily. His blood pressure is usually low and his respiration shallow and rapid with a fast and weak pulse. His temperature is elevated slightly above normal and it rises rapidly at the onset of illness. The ectotonic is resistant to many major diseases, but suffers excessively from insect bites and skin rashes. Unfortunately he can succumb to acute streptococcal infections of the throat which cause swelling and strangulation. His hypersensitivity leads not only to quick physical reactions but to excessively fast social reactions as well. It is difficult for this type to keep pace with slow-moving social chit-chat. He races ahead and trips over his own social feet.

The ectotonic loves privacy, and intellectual or mental stimulation. He needs shelter from excessive stimulation and time to sort out the inputs he has received, and connect them up with his own inner subjective experience, which he values highly. Self-awareness is a principle trait of ectotonia. The feelings of the ectotonic are not on display, even though they can be very strong, and so he is sometimes accused of not having any. They are uncomfortable in coping with social situations where overt expressions of sympathy are called for or where general idle conversation is the norm, for example in parties and dinners where they have no intimate acquaintances.

The ectotonics are hypersensitive to pain because they anticipate it and have a lower pain threshold as well. They do not project their voices like the mesotonics, but focus it to reach only the person they are addressing. They appear younger than their age and often wear an alert, intent expression.They can readily with their dream life and often rich fantasy life. When they become troubled they seek privacy and solitude in order to try to work out the difficulty.