It really depends what perspective we are talking about. Are you talking about your personality or the percieved personality of others?
Both, but mostly nurture.
I think of course, genetics affect a person’s personality to certain extend, but the environment of course has a bigger affect on someone’s behaviour and problem solving skills and value etc.
Let’s put the most extreme case for argument’s sake. Two intelligent professors give birth to a baby, genetically the baby probably has the best chance of being smart and intelligent, but the baby ends up in a third world country and receives no education, the baby isn’t going to grow up knowing much is he/she?
But knowledge isn’t the same as intelligence.
^ stop it with all that wisdom! 
We cannot say that two people have the same upbringing just because they are raised in the same family. Other than who your parents are, your environment also consists of people you meet outside of home, your teachers, defining thoughts introduced to you at specific turning points, or subtle differences in treatment that even your parents might not be aware of. Even the order of your birth probably matters. My younger brother had a different childhood than me, just because he grew up with an older male child kicking him around, and I did not. This might be why I am a more assertive, work in finance, etc., while my brother is doing “save the world” hippie stuff.
Environment also likely affects intelligence. At the most basic level, if you suffer from extreme malnourishment, your brain will probably not develop to its greatest potential. Other than that, early childhood education might physically improve your brain. Maybe neurons develop better if they receive more stimulation early in a person’s life. Education is surely important in developing your capacity to think, but maybe “brain exercise” is also a real thing.
It has to be. Nothing surprising. In this regard substantial research has been done and while discussing human cloning well known scientist N. M. Morales has covered the related aspects beautifully in a paper which may throw light on your valid observation (though written in the context of future human cloning efforts). The relevant part is abridged below (refrerence at the end) keeping in view your diverse interest in knowledge base (emphisis mine) :
In general terms, there are two kinds of environmental effects to be considered: family effects that are usually shared by siblings, and make them prone to be similar; and nonshared environmental effects. Nonshared environmental effects are the type of environmental influences that affect individuals, and in this case monozygotic twins, in a unique fashion. In spite of the fact that monozygotic twins are genetically identical, and although they will typically share the same family environment, these identical twins or potential human clones do not have identical personalities. They are not able to experience or interpret an event in exactly the same manner, even though they are genetically identical. Radical differences between identical twins are caused by nonshared environmental effects. Nonshared environmental effects are found in most studies of monozygotic twins to be more significant than shared environmental effects. ( So, it will be even more pronounced in normal siblings!) In the field of psychology, there is no evidence that it is possible to replicate individual human experience in exact detail. The majority of the studies provide evidence of moderate heritability, non-shared environmental influences, and modest shared environmental influences (Asbury, et al., 2008; Hansson, et al., 2008; Harlaar, et al., 2008; Kato and Pedersen, 2005; Kovas and Plomin, 2007; Saudino, 2005; Simberg, et al., 2009; Su, et al., 2005).
_According to Segal, et al., virtual twins are siblings who are not biologically related; however, they make the equivalent of twinship. These “twins” are of the same age, and have been reared together from infancy. In a study of genetic and environmental influences underlying general intellectual development of virtual twins (VTs), Segal, et al. (2007) found decreasing influences of shared environmental factors and an increased influence of genetic and non-shared environmental factors on general mental skills during development. The research included 43 virtual twin pairs between the ages of 8 and 13 years. _
_The study of Segal, et al., shows that the influence of genetic, and non-shared environmental, factors on intelligence, and on the development of general intellectual skills, increases over time, while the influence of shared environmental factors decreases throughout childhood. The study underscores the influence of non-shared factors on mental development, and also underlines the importance of non-shared factors on the general development of unrelated siblings, fraternal twins, and monozygotic twins _
The personality is an aspect of individual’s identity. Identity, defined as an organized conception of the self, in which the person can define his or her own values, goals, and beliefs, is reached through a series of stages in life (Marcia, 1966, 1980), and each of these is experienced differently by each individual during development and throughout the entire lifespan (Erikson, 1950, 1968). Identity is also the result of a continuous enriching process in which our entire personality acquires those individual characteristics that differentiate us from others.
Hence, the difference even though the genetic or environment factors being similar to a great extent.
(Based on extracts from “Psychological and Ideological Aspects of Human Cloning: A Transition to a Transhumanist Psychology” by Nestor Micheli Morales published in Journal of Evolution and Technology - Vol. 20 Issue 2 – August 2009 - pgs 19-42)
^ Respect.
Not to threadjack, but how do you all keep an even toned attitude? This week hasn’t gone my way (see my Sunday morning story) and I’ve found my sour mood spilling over into work, relationships, and my common courtesy.
How do you all maintain a proper composure on the front while on the back end ish is popping off?
Give absolutely zero f*cks.
My life quality improved dramatically once I realized that I don’t really care about other people.
^ I need to get on board Ohai. Thing is, when people fck with my money, it’s like they fcking with my emotions. Na’mean?
Just because you have the same parents doesn’t mean you have the same genes. And just because you have the same capacity for knowledge doesn’t mean you know the same volume.
This is about the prostitute who stole your wallet? It’s reasonable to be upset about that. However, I find that the best “revenge” is to realize how great your life is compared to that person’s. Sure, they cheated you out of $500, but you get to continue to get big paychecks, have a big savings account, retire early, enjoy social status from your prestige finance job, and hold meaningingful relationships with your family and friends. How many of these does the other person have?
Whenever I am frustrated with someone - let’s say I get cut off in traffic or something, I quietly think to myself “fuck you asshole, I still win at life”.
Edit: That is for CFAvsMBA.
Win at life or hacksaw yourself. Once you’ve reached that level of enlightenment, the rest is easy.
Scotch.
Good Scotch.
I really don’t think she was a prostitute, but yes, the woman who stole my wallet. This weekend my cop friend and I will put the screws to her. I’ve identified who she is per friends of friends.
Right… but what i am trying to say is, even if a child has all the genetics to be intelligent or have an IQ of 180, the child’s intelligence may never be exploit due to upbringing. It’s like if you put steve jobs in the poorest village in africa, he is not going to come up with iphone, he is going to be concerned with survival than creative innovations.
I don’t and I don’t expect myself to.
Hit the gym, get laid or jack, it’ll make you feel better
This is a perfect response
I know what you mean, i am just drawing an example of a “naturally” intelligent child in a deprived environment, that child may have nobel prize winning parents or blue collar parents, but let’s just say the child is tested for high IQ at birth, for argument’s sake, he or she may still not turn out smart if the upbringing does not allow him to utilize his capacity.
so i think there’s more to do with nurture than nature.