For many years, there had been a debate over whether genes alone can determine one's intelligence or whether the environment and training can increase one's intelligence. Some scientists think that people behave as they do according to genetic predispositions. This is known as the "nature" theory of human behavior. Other scientists believe that people think and behave in certain ways because they are taught to do so. This is known as the "nurture" theory of …showed first 75 words of 594 total…

…showed last 75 words of 594 total…born with the same intelligence level as other people in first world countries. However, they do not have the optimum environment to realize their potential, thus they fare much worse than others in first world countries. Genes only serve as guidelines. The rest is derived from interactions with the environment. Individual intelligence and human behavior cannot be predicted based on knowledge of genetics and the environment. When something is considered determined, free will is destroyed.