Lefty universe - Left-handed products and curiosities
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Among the people who use the left hand preferentially we can
Find different types of lefties:
a) "True" lefties are also called "pure lefties" who
they have homogeneous lateralization, that is to say right brain predominance for left eye, ear, hand and foot.
They are characterized by greater sensitivity, greater ease of movement
and greater precision, speed and strength with the left side.
b) Left-handed "fake." They include three groups: right-handed people who have lost functionality of the right hand (amputation, sequelae of A.C.V., etc.) and resort to the use of the left hand; to the ambidexters when they act with the left hand and finally to the right-handed lateralized that use the left hand as opposed to the environment or as identification with someone left-handed.
c) Left-handed "upset." They are left-handed corrected by punishment or by psychomotor reeducation technique that develop the use of the right hand.
In inheritance or accident claims, inheritance participates as follows: when both parents are left-handed, 46% of the children can be; when one of the parents is, 12% of the children can be left-handed and when both parents are right-handed, 4% of the children can be left-handed.

In many cultures there has been some social hostility against left-handers, once again the oppression against minorities is fulfilled:
Right-handed (dextromaniac):
The word right has the connotation of sacred ("to the right of God the Father", Dimas and Gestas). It is associated with justice (law), good, happiness, strength and dexterity (being right-handed) and human rights are discussed. In English, right is "right" and not being left-handed is "to be very clever."
In French, right is "droit."
Left-handed (sinistrómano):
The left word, on the contrary, connotes the profane, the bad, the sinister
(syistrosis), leftist politics, misfortune, weakness, being awkward (left handed).
In English, being clumsy is synonymous with left-handed, "the wrong way."
In French, "maladroit" means left-handedness or clumsiness.
Being left-handed is not a disadvantage in itself, but because it is a minority, the casualty has to face a world ready for right-handed people:
The use of cutlery, the western writing from left to right, the
sink faucets, door knobs, door twists
swivels, the rudders of the vehicles, the coin slots, the rope of the clocks, the shift levers (on the right) of the vehicles, desks at the study sites, etc. In addition to the above, a greater incidence of some pathologies has been found in left-handed people: allergies, migraines, speech disorders, autoimmune diseases (rheumatoid arthritis).
Recall also that sometimes they are mocked, misunderstood and
Corrective abuse
Rev Colomb Psiquiatr Vol. XXVIII, No. 2, 1999 Castilla O. 168

However, being left-handed has some advantages, such as faster precision (unscrewing), better reflexes, less sequelae in cases of cerebrovascular accidents.
There have been left-handed characters in history, such as in politics: Bill Clinton, Harry Truman, Gerald Ford; in sports: Manolo Orantes, Jimmy Connors, John Me Enroe; in art: Leonardo Da Vinci, Michelangelo, Pablo Picasso, Charlie Chaplin, Paul Me Cartney.
Life can be made more bearable for left-handed people if there is more understanding, tolerance and avoidance of segregation by the right-handed majority. In cases of involvement, psychotherapeutics can be intervened and in some cases with psychomotor reeducation techniques.
In left-handed people in which there is homogeneous lateralization, which is the minority, correction in the use of the right hand for writing <3) should not be forced.

1 Castell Cuixart P. Child Health and Psychology Guide. Barcelona: Editorial Planeta; 1983
2 Marcelly D. Psychopaíhologie de l'enfant. Paris: Masson S.A., 1993.
3 Gómez Pérez M. «The left-handed child» in Learning Disorders. Bogotá: Central Military Hospital; 1991
4 Serpa FIórezR. «The divided brain: glosses to an article», in Vanguardia Liberal. Bucaraman-ga. November 1, 1981.
5 Gazzaniga M. «Two brains in one» in Research and Science. Darmouth; 1998