I believe that both nature, such as genetics, and the way you were nurtured determines your physical and behavior traits. One of the reasons I believe that they both play a role on your physical and behavioral traits is the studies of twins that were separated at birth, they share some physical traits and even some behavior traits, but there are many things that they have different due to the way they are raised. Adoption studies show that
once adoptive siblings grow up their IQ correlation is the same as a strangers, but full siblings show a correlation of .6. Also, identical twins raised separately have a similar IQ with a correlation of .74, that is more than fraternal twins raised together, they have a correlation of .6. This proves that nature plays a big part in a persons mental ability. People with a better living environment and encouraging parents are proven to
be more successful than people living with bad families in a bad environment. Your environment plays a big role because first of all, money varies a lot in communities, which means twins growing up on the same street are more likely to fall in different groups of friends who could influence their behavior. Secondly, both nature and nurture have a big role on a persons height. if both parents were very tall and they had
a child, the child is most likely to be tall. However, if he does not eat the proper food, or get enough calcium, the child can be shorter than heredity "intended" him to be. For all these reasons and more, I believe that both nature and nurture equally effect a persons physical, mental, and behavioral traits.
It is my belief that both nature and nurture effect a persons behavior, mental state, and physical state. I believe that if your parents don't raise you correctly, than there will be problems throughout your lifetime. I also believe that if you hang out with the wrong group of people and surround yourself with those people, it will also cause problems throughout your lifetime.
My first supportive topic is height. You are "programmed" in your genes to be able to reach a certain height that you cannot exceed. But, if you don't eat healthy, sleep long, and you don't exercise, you will have a lesser chance of reaching your maximum potential height. Eat, sleep and exercise depend on your environment. You choose what you eat based on your surroundings, you choose when you go to bed, and you choose how you control your weight. It is all based on choice which you choose based on what you see is being chosen around you, by people you are closest to. Which turns back around into nature and nurture.
My second piece of support is attachment. It has been proven that children who are raised in an over-nurtured household grow up to keep that "clingy" bond. When you keep your child very close while growing up at their early (toddler) stage, they will eventually grow up and not want to leave because they don't know what to expect. This usually happens with mothers because they are usually home more, or more easy going.
My last supportive evidence is that of IQ testing within certain ethnic groups. There is belief that the reason why IQ is different for each ethnic group and varies between ethnic groups is that of biased IQ testing. Mainly, the test are built of the product of access to opportunities and resources (material).
"To put it simply children brought up in the ghetto tend to score lower on tests because they are denied the same life chances as more privileged members of society."