This is a common term that many psychologists use to describe how much we are a product of our environment and how much we are a product of our genetic backgrounds. Many theories exist around child development, for example, which focus on the early interactions we have and how that affects behaviour in later life. Some argue that childhood attachments help to keep us grounded and feeling safe while others state that nature plays a bigger part in our upbringing and that we cannot always escape our inherited traits.