Nurture or environment refers to the influences which an individual is confronted with after receiving the hereditary pattern through the genes. These influences start from the mothers’ womb. This is referred to as pre-natal environment. This implies that any factor that affects an individual’s growth and development but does not pass through the genes is considered as an environmental factor. For instance, the mothers’ diet (food), maternal drug, maternal accident may have negative impact on the development of the developing foetus. These include the effects of learning, training peer group influence, infectious diseases etc.