Most of us are aware of (or may be part of) a family where siblings are radically different from each other, their personalities, interests, and value systems sometimes seeming to be completely opposite. It is difficult to chalk this up to either nature or nurture because both parties couldn’t have a more common nature environment, or common nurture environment. Having been raised in the same household for their entire lives, and being biologically from the same sets of DNA, what could possibly cause such stark differences? Psychologists and biologists have attempted to tease out the influential factors by studying criminal records, IQ, personality traits, and sexual preferences of identical twins raised together, identical twins raised apart, adoptive siblings raised together, fraternal twins, siblings, and random […] Read More