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Another perspective on the interaction between genes and the environment is the concept of genetic environmental correlation    . Stated simply, our genes influence our environment, and our environment influences the expression of our genes ( [link] ). Not only do our genes and environment interact, as in range of reaction, but they also influence one another bidirectionally. For example, the child of an NBA player would probably be exposed to basketball from an early age. Such exposure might allow the child to realize his or her full genetic, athletic potential. Thus, the parents’ genes, which the child shares, influence the child’s environment, and that environment, in turn, is well suited to support the child’s genetic potential.

Two jigsaw puzzle pieces are shown; one depicts images of houses, and the other depicts a helical DNA strand.
Nature and nurture work together like complex pieces of a human puzzle. The interaction of our environment and genes makes us the individuals we are. (credit "puzzle": modification of work by Cory Zanker; credit "houses": modification of work by Ben Salter; credit "DNA": modification of work by NHGRI)

In another approach to gene-environment interactions, the field of epigenetics    looks beyond the genotype itself and studies how the same genotype can be expressed in different ways. In other words, researchers study how the same genotype can lead to very different phenotypes. As mentioned earlier, gene expression is often influenced by environmental context in ways that are not entirely obvious. For instance, identical twins share the same genetic information ( identical twins    develop from a single fertilized egg that split, so the genetic material is exactly the same in each; in contrast, fraternal twins    develop from two different eggs fertilized by different sperm, so the genetic material varies as with non-twin siblings). But even with identical genes, there remains an incredible amount of variability in how gene expression can unfold over the course of each twin’s life. Sometimes, one twin will develop a disease and the other will not. In one example, Tiffany, an identical twin, died from cancer at age 7, but her twin, now 19 years old, has never had cancer. Although these individuals share an identical genotype, their phenotypes differ as a result of how that genetic information is expressed over time. The epigenetic perspective is very different from range of reaction, because here the genotype is not fixed and limited.

Genes affect more than our physical characteristics. Indeed, scientists have found genetic linkages to a number of behavioral characteristics, ranging from basic personality traits to sexual orientation to spirituality (for examples, see Mustanski et al., 2005; Comings, Gonzales, Saucier, Johnson,&MacMurray, 2000). Genes are also associated with temperament and a number of psychological disorders, such as depression and schizophrenia. So while it is true that genes provide the biological blueprints for our cells, tissues, organs, and body, they also have significant impact on our experiences and our behaviors.

Let’s look at the following findings regarding schizophrenia in light of our three views of gene-environment interactions. Which view do you think best explains this evidence?

In a study of people who were given up for adoption, adoptees whose biological mothers had schizophrenia and who had been raised in a disturbed family environment were much more likely to develop schizophrenia or another psychotic disorder than were any of the other groups in the study:

  • Of adoptees whose biological mothers had schizophrenia (high genetic risk) and who were raised in disturbed family environments, 36.8% were likely to develop schizophrenia.
  • Of adoptees whose biological mothers had schizophrenia (high genetic risk) and who were raised in healthy family environments, 5.8% were likely to develop schizophrenia.
  • Of adoptees with a low genetic risk (whose mothers did not have schizophrenia) and who were raised in disturbed family environments, 5.3% were likely to develop schizophrenia.
  • Of adoptees with a low genetic risk (whose mothers did not have schizophrenia) and who were raised in healthy family environments, 4.8% were likely to develop schizophrenia (Tienari et al., 2004).

The study shows that adoptees with high genetic risk were especially likely to develop schizophrenia only if they were raised in disturbed home environments. This research lends credibility to the notion that both genetic vulnerability and environmental stress are necessary for schizophrenia to develop, and that genes alone do not tell the full tale.

Summary

Genes are sequences of DNA that code for a particular trait. Different versions of a gene are called alleles—sometimes alleles can be classified as dominant or recessive. A dominant allele always results in the dominant phenotype. In order to exhibit a recessive phenotype, an individual must be homozygous for the recessive allele. Genes affect both physical and psychological characteristics. Ultimately, how and when a gene is expressed, and what the outcome will be—in terms of both physical and psychological characteristics—is a function of the interaction between our genes and our environments.

Personal application questions

You share half of your genetic makeup with each of your parents, but you are no doubt very different from both of them. Spend a few minutes jotting down the similarities and differences between you and your parents. How do you think your unique environment and experiences have contributed to some of the differences you see?

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Questions & Answers

subjective observation is also called
Malayakumar Reply
coginitive psycologists utilize an analogy between
Raina Reply
to help with critical thinking and learn human behavior and sciences
MAM Reply
hi, I'm thinking about buy some books about psychology to understand more about it and learn more, why suggestions of books? thank you
Juan Reply
ciccarelli - introduction to psychology
Kanchan
robert baron 's psychology book
Kanchan
these books helps u to get good knowledge of psychology
Kanchan
what do you think about brain dead patients?
la Reply
all parts of their body function except their brain. So involuntary functions continue, like heart beating. But since life sustaining activities like eating or drinking are voluntary and brain cannot send signals, it means that they'll eventually die with no medical intervention.
sumitra
like a car there used to be a part of the engine called a brain..it controls how the car would function. If it's dead the car cannot start.
Cathy
what is psychology
Anubhuti Reply
Study of behavior and mental processes
Koketso
hi koketso
Chukwu
psychology is the study of mind and behaviour
JADE
psychology is a scientific study of human & animal behaviour & their cognitive processes
Arnika
what types of sleep disorders
ara Reply
Hello everybody! I am Ann from Russia. I would like to discuss this and text topic to improve my knowledge in psychology and my English.
Anna Reply
hello, I'm Olamide from Nigeria.
la
Hello:)
Anna
Are you psychologist or student or somebody else?)
Anna
something else
Yato
здравствуйте Анна! меня зовут Joshua, what would you like to know?As someone who's lived in South Africa,UK, and Australia I have a хорошо understanding of English :)
Universally
Oh
Abba
hi
Precious
Hello again
Anna
hello :) I'm Yasmine and I'm from Tunisia. i have a bachelor's degree in psychology
Yasmine
This app unfortunately work slow(
Anna
wow, I'm from tunisia too but I'm still a student
Faten
what is the phsicology behind female players? i know that male players don't have a close relationship with their feather, so they observe closer their mother, understanding better what females want, having ease with them, but i cant think of the circumstances a woman has to have to become a player
Yato
Faten that's really cool! where do you study? FSHST?
Yasmine
no, in ISSHT
Faten
it's near FSHST you know right?
Faten
Tunisia, I was there
Anna
Which field of psychology is popular in Tunisia?
Anna
@psychologist_bia
Anna
you can write me
Anna
if you want :)
Anna
For me more interesting -psychology of development
Anna
and what about you, guys?
Anna
@faten yes! i studied in FSHST :) but i still haven't finished my master's. it's in my long term plans
Yasmine
amazing Yasmine so you have a license?
Faten
Yes Faten, i graduated a year ago! what about you?
Yasmine
it's my first year so I'm still a beginner hhhhhh
Faten
congratulations btw
Faten
it's my first year so I'm still a beginner hhhhhhh
Faten
You all are psychology students?
Hamna
@yasmine yes I am actually enjoying it. it's super interesting!
Faten
oooo
Precious
i'm currently finishing my 2nd year of my degree :')
Precious
I'm just in high school :3
Hamna
cool! you're planning to take psyc as ur major?
Precious
I don't know yet. I'm just interested in it for now.
Hamna
nice! it certainly is very interesting :')
Precious
:) do u plan on being a psychologist?
Hamna
Hello guys, this is student from highschool. If anyone does live in America, have you guys ever took AP Psychology? I want to find some students or teachers who took this class.
Oh, sorry for inconvenience. I putted in the wrong chat. Sorry!
Hello everyone, I'm nyakuiy from the youngest African country which is south Sudan I'm just from hight school but as I will be entering university later this year my first choice is psychology
Nyakuei
Anna, what exact exploration expecting.. raise doubts and get the answers in psychology.
dcs
mr.king, if want to join or get the pdf, you must complete phd.
dcs
oh, I see but first I'm taking Rpm.
King
hi, i'm Adams from nigeria i likt to be part of this improvement
Adamu
hello Adams, I'm also from Nigeria studying psychology
la
Mr. Nyakuei, all the best for entering in psychology.
dcs
good choice that is...
dcs
@Mr.King, do check ur mail inbox
Smitha
Hello everybody, I'm sabah from Algeria. I'm psychologist and student in the same time.
Sabah
hello
Jwala
what is mood
Abdi Reply
mood is an affective state. In contrast to emotions or feelings, moods are less specific, less intense and less likely to be provoked or instantiated by a particular stimulus or event
la
Why some woman are looking up and down why you approach her?
Ridwan Reply
I don't know
GOPAL
It could be a sign of either lack of interest or maybe they are nervous.
Rachna
if a girl don't look directly in your eyes while talking then it is 80 percent sure that she has crush on you
Sanket
or she is scared. fear creates an avoidant-type relationship. as does embarrassment. when a woman is so bold to look you in the eye, or other visual signs of her attention, she is performing a feminine courtship
but all this is also confirmed or denied by cultural background. in some countries women would be frowned on for approaching the man in any form. some societies hold women in highest regard, and thus their judgment is considered an honor.
not looking in the eye, is a sign if a female going through the development of a crush on the person OR that her past experiences and trauma compels her to avoid eye-contact. usually females do act nervous around the men they like but once there is an establishment of comfortness and trust
Tiasha
using myself as an example: if im interested, you will know it by my focus, my curiosity, my desire to know more. much like an interrogation i suppose. every question would ripple through you demanding an answer. then progressing onward. if im not interested, i would find some way out
looking into the eyes is just a matter of time
Tiasha
It is some sort of inhibition and/or trait of famininity.
dcs
if the woman is not interested in you in any way, that is when best she'll look up straight to your eyeballs, but if a woman is actually looking up and down while you ask her out or on a date, believe me, she never believed you in person can ask her out, maybe she feels you are too big to ask her ou
Olaleye
and if you are dressed in a way that is different to the onlooker, of course they are going to examine you. First to discover the apparent trend you are wearing, second to determine if you are foreign or mentally compromised. wink at them and blow a kiss next time. you may get a smile or rejection
if a woman does this to the man she is already dating, it relates to socioeconomical status concerns. "does my man look the part?" "will he make me look foolish among my peers?"
or simply "is he wearing the shoes i recommended?"
its not only happened to women, mens also perceive. mostly shy people feels this often. when shy people makes conversation with opposite genders, the main thinking of their is mostly there deal with opposite gender, its leads to shy and discomfort and makes them avoided straight look
gokul
the eyes are considered soul-bearing. to stay disconnected from sharing that part of yourself says many things, usually fear or discomfort. perhaps inferiority complex. or simply shyness as mentioned by gokul
May be she is Practical Minded. Gold Digger ? Because those type people Frequently look Top to Bottom to Analyse a Persons worth. The Best way to Judge is 1) She Holds an iPhone (just to look Posh) 2) She has a Cringy Behavior While Talking. (doesn't have a cultured attitude)
Mushtaque
if those two parameters match in any Girl. Then Money Speaks to her. Money in sense any form (Gift's / Phone's / Jewellery etc) Check Wisely and Approach Anyone Buddy. Take Care.
Mushtaque
very good Mushtaque. Her arrogant behavior or desire for flashy and valuable items would be signs of this. How would you handle this type of person if you were caught on conversation?
Being a Psychologist, I would look at her as a Subject and Have Conversation and know better about her and her intentions and why and what made her become like that. Hopefully not a One Day Task. In General as a Human, I would just Ignore.
Mushtaque
Mushtaque don't you think a psychologist is not supposed to judge a person? As far as I can see from your above messages you have already come to a conclusion that these are going to be her intentions. As a psychologist, should not you know that humans are complex and every individual differs?
Alisha
In this way you're Judging Psychologist's that they Cant Judge. hmmm. well, ofcourse they are Complex , but Traits are identifiable.
Mushtaque
a part of psychology is on human behavior which as well all know is variable. so, being a psychologist do you think an individual can be confined to first impressions?
Alisha
being psychologist is about being open minded and looking not judging as no individual is the same plus it's about digging deeper into the reasons behind the actions of certain individuals
Rhian
could not be put into better words, rhian.
Alisha
Agree with you Thomas.
Mushtaque
hi 👋
kim
Application Error, Shown Rhian name as Rhian Thomas. previous comment was for Rhian.
Mushtaque
I need help please
kim
Hi Kim Liza. May I know What Kind of Help you are seeking ?
Mushtaque
I have a talk in humanistic psychology I don't know what to do
kim
i seems not to understand your question please, can you enlighten us on it so as to contribute or proffer solution to it
Olaleye
you have to make a presentation that talks about humanistic psychology
kim
I made an introduction
kim
can u help me
kim
Humanistic Psychology: It is a psychological perspective that emphasizes the study of the whole person. Humanistic psychologists look at human behavior not only through the eyes of the observer, but through the eyes of the person doing the behaving.
Olaleye
Proponents of Humanistic Psychology Abraham Maslow Co-Founder of Humanistic Psychology with Carl Rogers Believed we are all biologically driven to achieve self- actualization Came up with Hierarchy of Needs theory that is most important humanistic theory.
Olaleye
thank you so much
kim
Proponents of Humanistic Psychology Abraham Maslow  Co-Founder of Humanistic Psychology with Carl Rogers  Believed we are all biologically driven to achieve self- actualization  Came up with Hierarchy of Needs theory that is most important humanistic theory.
Olaleye
Maslow is known for his Hierarchy of Needs • Maslow proposed 5 levels of need: from basic to more advanced, they are: – Physiological (food, water, sex) – Safety (security, order, stability – Belongingness and love – Esteem (from self and others) – Self-actualization • The more bas
Olaleye
According to Carl Rogers • Important issues must be defined by the individual: importance of an autonomous self: self-insight is what predicts later behavior. • Actualizing tendency: people tend to develop in a positive direction, toward self-actualization
Olaleye
• The way we perceive our environment determines how it affects us. (Roger's theory emphasizes phenomenology) • Incongruence between our self-concept and our experience leads to pathology
Olaleye
In Rogerian therapy, the client • Moves from talking about externals to talking about personal issues • Moves from talking about the past to dealing with the present • Becomes closer to and more comfortable with his/her feelings
Olaleye
• Becomes more open to new experiences, experiences more freedom
Olaleye
The Fully Functioning Person, for Rogers • Is aware of all experiences • Lives in the moment • Trusts in his/her self • Experiences freedom in choices • Is creative and adapts well • Is still growing and experiencing difficulties
Olaleye
i hope you will find this helpful
Olaleye
yeaaa thank you so much
kim
hey Guy's
Joseph
what's the difference between hallucinations and being crazy?
Joseph
they are both abnormalities
Olaleye
false perception in the absence of stimulus is hallucination.
dcs
crazy is a regular word using in daily life, which is passoinated towards objects or creatures.
dcs
Is/did anyone study/ing forensic psychology
AUDREIGH
please explain acquisition of skills
oshin
thanks everyone
Gimba
Acquisition Skill is the stage during which a new response is learned and gradually strengthened. For instance, Hitting moving objects, Horse riding, car driving etc,.
dcs
start a new thread for acquisition of skills
sumitra
what is the last stage of experimental method
sawera Reply
the thing which are used to verify hypotheses in experimental method it is called
sawera
Hi.. I'm unable to open the chat.. how do I do that.. please help!
sumitra Reply
español traducir en español ya
Rafael Reply
I'm sure if you went to settings you would be able to change the language.
Demi
안 데여. 한번도 못 찾았어요.
Lex
그런데 여기서 미국 사람들이 우리가 영화 쓰는 거는 그렇게 시킨 거야.
Lex
내가 뭐 물어 볼까 봐 그냥 이거 뭐라고
Lex
it's not speaking nonsense cuz you know it is basically nonsense the machine doesn't really hear what I'm saying cuz I can speak English as well. easier to take direction when you say Jolly Good, Tally Ho. God save the Queen for me.Pro Deo et Patriae And other snazzy cliches.Irrumatus Manducare US
Lex
anglo wasp POS
Lex
cave dwelling trogledite.
Lex
forgive my spelling.
Lex
what r u doing
ANGELICA
what's actually going on here?
Demi
ok
ANGELICA
take it easy
King
are you guys studying or working
King
I'm studying, what are you?
Demi
im studying
ANGELICA
are you enjoying it angelica?
Demi
this year, I'm going to take Rpm
King
hoping to pass the exam
King
studying what?
King
I'm studying clinical. good luck with your exams!
Demi
Thanks Demi.
King
hi
Sharavana
hello., how are you
King
I wonder why this app don't have information about statistics
King
that's a very good point. I've found the app very helpful for my introduction into my new career path so I'm more than great full
Demi
I hope to find app like yours
King
this subject I need to review: Psychological Assessment, Theories of Personality, Abnormal Psychology and Industrial Psychology.., I need to refresh my mind even though I'm a fresh Graduate of Bs Psychology.
King
food in classical condition is called
dude Reply
dream anylisis is method of
dude
dream anylisis is method of
dude
psychoanalysis
Kaiser
food is unconditioned stimulus
gokul
it's a necessity
Anthony
its unconditional stimulus
Puja
Unconditional Stimulus
dcs
conditioned stimulus
Laura
classical conditioning
JADE
advantages of ECG in biopsychology
Sheeba Reply
can I get the information about the advantages of ECG in biopsychology
Sheeba

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Source:  OpenStax, Psychology. OpenStax CNX. Feb 03, 2015 Download for free at https://legacy.cnx.org/content/col11629/1.5
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