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Twin study

Index Twin study

Twin studies are studies conducted on identical or fraternal twins. [1]

113 relations: ADE model, Adoption, Adoption study, Akaike information criterion, Allele, American Society for Reproductive Medicine, Animal breeding, Annals of Human Genetics, Austin, Texas, Behavior Genetics (journal), Behavior Genetics Association, Behavioral and Brain Sciences, Behavioural genetics, Causality, Common Era, Compulsory education, Confidence interval, Confounding, Correlation and dependence, Correlation does not imply causation, Criminology (journal), Cyril Burt, Darrick E. Antell, Depression (mood), Differential susceptibility hypothesis, Edward Thorndike, Egg cell, Elsevier, Embryo, Epidemiology, European Journal of Human Genetics, Exercise, Falconer's formula, Family, Fertilisation, Francis Galton, Gene, Gene-environment correlation, Gene–environment interaction, Genes, Brain and Behavior, Genetica, Genetics, Genome-wide complex trait analysis, Genotype, Germans, Harvard University Press, Heritability, Heritability of autism, Heritability of IQ, Hermann Werner Siemens, ..., Hierarchical database model, Hippocrates, Human development (biology), Human height, Human nature, Identical Strangers, Instrumental variables estimation, Intelligence (journal), International Behavioural and Neural Genetics Society, International Journal of Epidemiology, International Society for Twin Studies, International Society of Psychiatric Genetics, JAMA Psychiatry, John C. Loehlin, Journal of the Royal Society of Medicine, Kaiser Wilhelm Institute of Anthropology, Human Heredity, and Eugenics, Maximum likelihood estimation, Mendelian randomization, Menstrual cycle, Michigan State University Twin Registry, Minnesota Twin Family Study, Molecular genetics, Nature Genetics, Nature versus nurture, Not in Our Genes, OpenMx, Otmar Freiherr von Verschuer, Ovulation, Peter Schönemann, Phenotype, Phenotypic trait, PLOS Genetics, PLOS One, Polymorphism (biology), Posidonius, Psychiatric Quarterly, Psychology, Psychometrika, Quantitative genetics, Reaction norm, Ronald Fisher, Routledge, Sampling (statistics), Science (journal), Sewall Wright, Sibling, Single-nucleotide polymorphism, Social Science Research, Society for the Scientific Study of Reading, Springer Science+Business Media, Statistics, Structural equation modeling, Taylor & Francis, The Gene Illusion, The Lancet, Twin, Twin Research and Human Genetics, TwinsUK, University of Texas Press, Variance, Vitro, Wiley Interdisciplinary Reviews: Cognitive Science, Wilhelm Weinberg. Expand index (63 more) »

ADE model

An ADE model is a genetic model for twin studies which includes dominance genetic effects.

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Adoption is a process whereby a person assumes the parenting of another, usually a child, from that person's biological or legal parent or parents, and, in so doing, permanently transfers all rights and responsibilities, along with filiation, from the biological parent or parents.

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Adoption study

Adoption studies are one of the classic tools of behavioral genetics.

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Akaike information criterion

The Akaike information criterion (AIC) is an estimator of the relative quality of statistical models for a given set of data.

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An allele is a variant form of a given gene.

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American Society for Reproductive Medicine

The American Society for Reproductive Medicine (ASRM) is a multidisciplinary organization dedicated to the advancement of the science and practice of reproductive medicine.

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Animal breeding

Animal breeding is a branch of animal science that addresses the evaluation (using best linear unbiased prediction and other methods) of the genetic value (estimated breeding value, EBV) of livestock.

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Annals of Human Genetics

The Annals of Human Genetics is a bimonthly peer-reviewed scientific journal covering human genetics.

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Austin, Texas

Austin is the capital of the U.S. state of Texas and the seat of Travis County, with portions extending into Hays and Williamson counties.

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Behavior Genetics (journal)

Behavior Genetics is a peer-reviewed scientific journal published monthly by Springer Science+Business Media that is covering "research in the inheritance of behavior".

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Behavior Genetics Association

The Behavior Genetics Association (BGA) is a learned society established in 1970 and which promotes research into the connections between heredity and behavior, both human and animal.

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Behavioral and Brain Sciences

Behavioral and Brain Sciences is a peer-reviewed scientific journal of Open Peer Commentary established in 1978 by Stevan Harnad and published by Cambridge University Press.

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Behavioural genetics

Behavioural genetics also referred to as behaviour genetics, is a field of scientific research that uses genetic methods to investigate the nature and origins of individual differences in behaviour.

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Causality (also referred to as causation, or cause and effect) is what connects one process (the cause) with another process or state (the effect), where the first is partly responsible for the second, and the second is partly dependent on the first.

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Common Era

Common Era or Current Era (CE) is one of the notation systems for the world's most widely used calendar era – an alternative to the Dionysian AD and BC system.

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Compulsory education

Compulsory education refers to a period of education that is required of all people and is imposed by government.

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Confidence interval

In statistics, a confidence interval (CI) is a type of interval estimate, computed from the statistics of the observed data, that might contain the true value of an unknown population parameter.

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In statistics, a confounder (also confounding variable, confounding factor or lurking variable) is a variable that influences both the dependent variable and independent variable causing a spurious association.

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Correlation and dependence

In statistics, dependence or association is any statistical relationship, whether causal or not, between two random variables or bivariate data.

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Correlation does not imply causation

In statistics, many statistical tests calculate correlations between variables and when two variables are found to be correlated, it is tempting to assume that this shows that one variable causes the other.

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Criminology (journal)

Criminology is a peer-reviewed academic journal published quarterly by Wiley-Blackwell on behalf of the American Society of Criminology.

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Cyril Burt

Sir Cyril Lodowic Burt, FBA (3 March 1883 – 10 October 1971) was an English educational psychologist and geneticist who made contributions also to statistics.

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Darrick E. Antell

Darrick E. Antell is a board certified plastic surgeon and reconstructive surgeon who has maintained a private practice in Manhattan, New York for over 20 years.

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Depression (mood)

Depression is a state of low mood and aversion to activity that can affect a person's thoughts, behavior, tendencies, feelings, and sense of well-being.

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Differential susceptibility hypothesis

The differential susceptibility hypothesis proposed by Jay Belsky is another interpretation of psychological findings that are usually discussed according to the diathesis-stress model.

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Edward Thorndike

Edward Lee Thorndike (August 31, 1874 – August 9, 1949) was an American psychologist who spent nearly his entire career at Teachers College, Columbia University.

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Egg cell

The egg cell, or ovum (plural ova), is the female reproductive cell (gamete) in oogamous organisms.

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Elsevier is an information and analytics company and one of the world's major providers of scientific, technical, and medical information.

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An embryo is an early stage of development of a multicellular diploid eukaryotic organism.

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Epidemiology is the study and analysis of the distribution (who, when, and where) and determinants of health and disease conditions in defined populations.

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European Journal of Human Genetics

The European Journal of Human Genetics is a monthly peer-reviewed scientific journal published by the Nature Publishing Group on behalf of the European Society of Human Genetics.

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Exercise is any bodily activity that enhances or maintains physical fitness and overall health and wellness.

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Falconer's formula

Falconer's formula is used in twin studies to determine the genetic heritability of a trait based on the difference between twin correlations.

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Every person has his/her own family.mother reproduces with husband for children.In the context of human society, a family (from familia) is a group of people related either by consanguinity (by recognized birth), affinity (by marriage or other relationship), or co-residence (as implied by the etymology of the English word "family" from Latin familia 'family servants, domestics collectively, the servants in a household,' thus also 'members of a household, the estate, property; the household, including relatives and servants,' abstract noun formed from famulus 'servant, slave ') or some combination of these.

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Fertilisation or fertilization (see spelling differences), also known as generative fertilisation, conception, fecundation, syngamy and impregnation, is the fusion of gametes to initiate the development of a new individual organism.

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Francis Galton

Sir Francis Galton, FRS (16 February 1822 – 17 January 1911) was an English Victorian era statistician, progressive, polymath, sociologist, psychologist, anthropologist, eugenicist, tropical explorer, geographer, inventor, meteorologist, proto-geneticist, and psychometrician.

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In biology, a gene is a sequence of DNA or RNA that codes for a molecule that has a function.

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Gene-environment correlation

Gene-environment correlation (or genotype-environment correlation) is said to occur when exposure to environmental conditions depends on an individual's genotype.

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Gene–environment interaction

Gene–environment interaction (or genotype–environment interaction or G×E) is when two different genotypes respond to environmental variation in different ways.

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Genes, Brain and Behavior

Genes, Brain and Behavior (also known as G2B) is a peer-reviewed online-only scientific journal covering research in the fields of behavioral, neural, and psychiatric genetics.

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Genetica is a peer-reviewed scientific journal covering research in genetics and evolutionary biology.

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Genetics is the study of genes, genetic variation, and heredity in living organisms.

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Genome-wide complex trait analysis

Genome-wide complex trait analysis (GCTA) GREML is a statistical method for variance component estimation in genetics which quantifies the total narrow-sense (additive) contribution to a trait's heritability of a particular subset of genetic variants (typically limited to SNPs with MAF >1%, hence terms such as "chip heritability"/"SNP heritability").

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The genotype is the part of the genetic makeup of a cell, and therefore of an organism or individual, which determines one of its characteristics (phenotype).

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Germans (Deutsche) are a Germanic ethnic group native to Central Europe, who share a common German ancestry, culture and history.

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Harvard University Press

Harvard University Press (HUP) is a publishing house established on January 13, 1913, as a division of Harvard University, and focused on academic publishing.

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Heritability is a statistic used in the fields of breeding and genetics that estimates the degree of variation in a phenotypic trait in a population that is due to genetic variation between individuals in that population.

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Heritability of autism

The heritability of autism is the proportion of differences in expression of autism that can be explained by genetic variation; if the heritability of a condition is high, then the condition is considered to be primarily genetic.

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Heritability of IQ

Research on heritability of IQ implies, from the similarity of IQ in closely related persons, the proportion of variance of IQ among individuals in a study population that is associated with genetic variation within that population.

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Hermann Werner Siemens

Weyers, Wolfgang.

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Hierarchical database model

A hierarchical database model is a data model in which the data is organized into a tree-like structure.

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Hippocrates of Kos (Hippokrátēs ho Kṓos), also known as Hippocrates II, was a Greek physician of the Age of Pericles (Classical Greece), and is considered one of the most outstanding figures in the history of medicine.

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Human development (biology)

Human development is the process of growing to maturity.

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Human height

Human height or stature is the distance from the bottom of the feet to the top of the head in a human body, standing erect.

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Human nature

Human nature is a bundle of fundamental characteristics—including ways of thinking, feeling, and acting—which humans tend to have naturally.

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Identical Strangers

Identical Strangers: A Memoir of Twins Separated and Reunited is a 2007 memoir written by Elyse Schein and Paula Bernstein and published by Random House.

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Instrumental variables estimation

In statistics, econometrics, epidemiology and related disciplines, the method of instrumental variables (IV) is used to estimate causal relationships when controlled experiments are not feasible or when a treatment is not successfully delivered to every unit in a randomized experiment.

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Intelligence (journal)

Intelligence is a peer-reviewed academic journal of psychology that covers intelligence and psychometrics.

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International Behavioural and Neural Genetics Society

The International Behavioural and Neural Genetics Society (IBANGS) is a learned society that was founded in 1996.

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International Journal of Epidemiology

The International Journal of Epidemiology is a bimonthly peer-reviewed medical journal covering research in epidemiology.

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International Society for Twin Studies

The International Society for Twin Studies (ISTS) is an international, non-profit scientific organization.

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International Society of Psychiatric Genetics

The International Society of Psychiatric Genetics (ISPG) is a learned society that aims to "promote and facilitate research in the genetics of psychiatric disorders, substance use disorders and allied traits".

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JAMA Psychiatry

JAMA Psychiatry (until 2013: Archives of General Psychiatry) is a monthly, peer-reviewed medical journal published by the American Medical Association.

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John C. Loehlin

John Clinton Loehlin (born January 13, 1926) is an American behavior geneticist and psychology and computer science professor emeritus.

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Journal of the Royal Society of Medicine

The Journal of the Royal Society of Medicine is an open peer-reviewed medical journal.

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Kaiser Wilhelm Institute of Anthropology, Human Heredity, and Eugenics

The Kaiser Wilhelm Institute of Anthropology, Human Heredity, and Eugenics was founded in 1927 in Berlin, Germany.

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Maximum likelihood estimation

In statistics, maximum likelihood estimation (MLE) is a method of estimating the parameters of a statistical model, given observations.

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Mendelian randomization

In epidemiology, Mendelian randomization is a method of using measured variation in genes of known function to examine the causal effect of a modifiable exposure on disease in observational studies.

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Menstrual cycle

The menstrual cycle is the regular natural change that occurs in the female reproductive system (specifically the uterus and ovaries) that makes pregnancy possible.

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Michigan State University Twin Registry

The Michigan State University Twin Registry (or MSUTR) is a registry of twins produced by researchers at Michigan State University.

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Minnesota Twin Family Study

The Minnesota Twin Family Study (or MTFS) is a longitudinal study of twins conducted by researchers at the University of Minnesota.

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Molecular genetics

Molecular genetics is the field of biology that studies the structure and function of genes at a molecular level and thus employs methods of both molecular biology and genetics.

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Nature Genetics

Nature Genetics is a scientific journal founded as part of the ''Nature'' family of journals in 1992.

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Nature versus nurture

The nature versus nurture debate involves whether human behaviour is determined by the environment, either prenatal or during a person's life, or by a person's genes.

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Not in Our Genes

Not in Our Genes: Biology, Ideology and Human Nature is a 1984 book by the evolutionary geneticist Richard Lewontin, the neurobiologist Steven Rose, and the psychologist Leon Kamin, in which the authors criticize sociobiology and genetic determinism and advocate a socialist society.

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OpenMx is an open source program for extended structural equation modeling.

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Otmar Freiherr von Verschuer

Otmar Freiherr von Verschuer (16 July 1896 – 8 August 1969) was a German human biologist and geneticist, who was the Professor of Human Genetics at the University of Münster until his 1965 retirement.

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Ovulation is the release of eggs from the ovaries.

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Peter Schönemann

Peter H. Schönemann (July 15, 1929 – April 7, 2010) was a German born psychometrician and statistical expert.

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A phenotype is the composite of an organism's observable characteristics or traits, such as its morphology, development, biochemical or physiological properties, behavior, and products of behavior (such as a bird's nest).

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Phenotypic trait

A phenotypic trait, or simply trait, is a distinct variant of a phenotypic characteristic of an organism; it may be either inherited or determined environmentally, but typically occurs as a combination of the two.

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PLOS Genetics

PLOS Genetics is an open access peer-reviewed genetics-focused journal established in 2005 by the non-profit organization Public Library of Science (PLOS).

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PLOS One (stylized PLOS ONE, and formerly PLoS ONE) is a peer-reviewed open access scientific journal published by the Public Library of Science (PLOS) since 2006.

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Polymorphism (biology)

Polymorphism in biology and zoology is the occurrence of two or more clearly different morphs or forms, also referred to as alternative phenotypes, in the population of a species.

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Posidonius (Ποσειδώνιος, Poseidonios, meaning "of Poseidon") "of Apameia" (ὁ Ἀπαμεύς) or "of Rhodes" (ὁ Ῥόδιος) (c. 135 BCE – c. 51 BCE), was a Greek Stoic philosopher, politician, astronomer, geographer, historian and teacher native to Apamea, Syria.

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Psychiatric Quarterly

The Psychiatric Quarterly is a peer-reviewed medical journal that was established in 1915 as The State Hospital Quarterly (and). It obtained its current name in 1927.

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Psychology is the science of behavior and mind, including conscious and unconscious phenomena, as well as feeling and thought.

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Psychometrika is the primary journal published by the Psychometric Society, a professional body devoted to psychometrics and quantitative psychology.

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Quantitative genetics

Quantitative genetics is a branch of population genetics that deals with phenotypes that vary continuously (in characters such as height or mass)—as opposed to discretely identifiable phenotypes and gene-products (such as eye-colour, or the presence of a particular biochemical).

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Reaction norm

In ecology and genetics, a reaction norm, also called a norm of reaction, describes the pattern of phenotypic expression of a single genotype across a range of environments.

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Ronald Fisher

Sir Ronald Aylmer Fisher (17 February 1890 – 29 July 1962), who published as R. A. Fisher, was a British statistician and geneticist.

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Routledge is a British multinational publisher.

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Sampling (statistics)

In statistics, quality assurance, and survey methodology, sampling is the selection of a subset (a statistical sample) of individuals from within a statistical population to estimate characteristics of the whole population.

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Science (journal)

Science, also widely referred to as Science Magazine, is the peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals.

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Sewall Wright

Sewall Green Wright (December 21, 1889March 3, 1988) was an American geneticist known for his influential work on evolutionary theory and also for his work on path analysis.

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A sibling is one of two or more individuals having one or both parents in common.

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Single-nucleotide polymorphism

A single-nucleotide polymorphism, often abbreviated to SNP (plural), is a variation in a single nucleotide that occurs at a specific position in the genome, where each variation is present to some appreciable degree within a population (e.g. > 1%).

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Social Science Research

Social Science Research is a quarterly peer-reviewed academic journal covering the field of sociology.

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Society for the Scientific Study of Reading

The Society for the Scientific Study of Reading was created in 1993 by Ronald P. Carver.

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Springer Science+Business Media

Springer Science+Business Media or Springer, part of Springer Nature since 2015, is a global publishing company that publishes books, e-books and peer-reviewed journals in science, humanities, technical and medical (STM) publishing.

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Statistics is a branch of mathematics dealing with the collection, analysis, interpretation, presentation, and organization of data.

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Structural equation modeling

Structural equation modeling (SEM) includes a diverse set of mathematical models, computer algorithms, and statistical methods that fit networks of constructs to data.

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Taylor & Francis

Taylor & Francis Group is an international company originating in England that publishes books and academic journals.

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The Gene Illusion

The Gene Illusion is a 2003 book by clinical psychologist Jay Joseph, in which the author challenges the evidence underlying genetic theories in psychiatry and psychology.

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The Lancet

The Lancet is a weekly peer-reviewed general medical journal.

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Twins are two offspring produced by the same pregnancy.

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Twin Research and Human Genetics

Twin Research and Human Genetics is a peer-reviewed scientific journal published bimonthly by the Cambridge University Press.

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TwinsUK, also known as TwinsUK Registry, is the biggest UK adult registry of twins in the United Kingdom, ages 16 to 98 to study the genetic and environmental aetiology of age related complex traits and diseases.

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University of Texas Press

The University of Texas Press (or UT Press) is a university press that is part of the University of Texas at Austin.

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In probability theory and statistics, variance is the expectation of the squared deviation of a random variable from its mean.

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Vitro is the largest glass producer in Mexico and one of the world's main organizations in its industry.

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Wiley Interdisciplinary Reviews: Cognitive Science

Wiley Interdisciplinary Reviews: Cognitive Science (WIREs Cognitive Science) is a peer-reviewed scientific journal covering cognitive science.

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Wilhelm Weinberg

Wilhelm Weinberg (Stuttgart, 25 December 1862 – 27 November 1937, Tübingen) was a German obstetrician-gynecologist, practicing in Stuttgart, who in a 1908 paper, published in German in Jahresheft des Vereins für vaterländische Naturkunde in Württemberg (The Annals of the Society of National Natural History in Württemberg), expressed the concept that would later come to be known as the Hardy-Weinberg principle.

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Redirects here:

Discordant Twins, Discordant twins, Equal environment assumption, Equal environments assumption, Shared environment, Twin research, Twin studies, Unique environment, Unshared environment.


[1] https://en.wikipedia.org/wiki/Twin_study

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