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History of Twins The source of this paper was written by Francis Galton when twin research was very basic. His paper provides the ideas that many researchers to this day are using and is beneficial to anyone researching this topic. His paper was written entirely in first person and is a collection of his results and ideas. His examples are not cited but generally credited as you will see. No matter what period of time you look at, twins have always been the subject of human curiosity. This desire to know the truth about twinning has led to questions that makes us wonder about the individuality of ourselves. Do the tendencies received at birth affect us more than the tendencies afforded to us by environment? This is the question of Nature vs. Nurture. Francis Galton believed that nature has more an effect on who we become rather than our surroundings. He believes to prove this in his study of twins. In doing this experiment, he came to show us a greater understanding into the mystery that is twins. He sent out an inquiry for twins. There were basically 2 kinds of twins sought for this particular experiment. Twins, who were closely alike through out infancy and adolescence til around the age of 16, that either grew unlike o