Contributions of twin research to psychology.

Theory of fluid and crystallized intelligence: A critical experiment.

1963 • 2,379 citations

Primary Mental Abilities

1973 • 2,095 citations

Twins: A Study of Heredity and Environment.

1937 • 452 citations

The History of Twins, as a Criterion of the Relative Powers of Nature and Nurture

1876 • 446 citations

Sex Differences in Spatial Visualization as Evidence of Sex-Linked Inheritance

1961 • 290 citations

Genetics and Intelligence: A Review

1963 • 285 citations

Studies in Expressive Movement

1934 • 274 citations

Monozygotic Twins, Brought up Apart and Brought up Together

1964 • 272 citations

MONOZYGOTIC AND DIZYGOTIC TWIN DIAGNOSIS

1955 • 268 citations

Biochemical Theories of Schizophrenia

1959 • 222 citations

The relative effect of nature and nurture influences on twin differences.

1929 • 215 citations

Tooth size and occlusion in twins

1949 • 202 citations

STUDIES ON PHENYLKETONURIA. I. RESTRICTED PHENYLALANINE INTAKE IN PHENYLKETONURIA 1

1955 • 173 citations

The Inheritance of Neuroticism: An Experimental Study

1951 • 160 citations

Heritability of personality: A demonstration.

1963 • 154 citations

Maternal Behavior, Child Behavior, and Their Intercorrelations from Infancy Through Adolescence

1963 • 149 citations

Some notes on the reporting of growth data.

1951 • 149 citations

The Hereditary Abilities Study: Hereditary Components in a Psychological Test Battery.

1962 • 142 citations

The heritability of certain anthropometric characters as ascertained from measurements of twins.

1956 • 141 citations

The interpretation of twin data.

1961 • 134 citations

Twin Births and Twins from a Hereditary Point of View.

1928 • 133 citations

IMPROVEMENTS IN THE CLASSIFICATION OF THE TASTER GENOTYPES

1958 • 98 citations

The development of motor abilities during the first three years.

1935 • 96 citations

STUDIES IN TWIN RESEMBLANCE

1925 • 88 citations

Individual Differences in Colour Vision

1952 • 80 citations

THE INHERITANCE OF BEHAVIOR

1956 • 76 citations

The multiple abstract variance analysis equations and solutions: For nature-nurture research on continuous variables.

1960 • 72 citations

Multivariate Analysis of Twin Differences

1965 • 71 citations

Dominance of eye and hand.

1957 • 69 citations

Research designs in psychological genetics with special reference to the multiple variance method.

1953 • 68 citations

MENTAL TRAITS AND HEREDITY

1925 • 67 citations

Mental growth during the first three years.

2005 • 66 citations

Skin Resistance Levels and Galvanic Skin Response: Unilateral Differences

1963 • 62 citations

Genetical linkage between the loci for glucose‐6‐phosphate dehydrogenase deficiency and colour‐blindness in American Negroes

1962 • 62 citations

Environment and Human Plasticity

1954 • 62 citations

DEVELOPMENTAL CHANGES IN THE OLFACTORY THRESHOLD OF THE NEONATE1

1963 • 61 citations

Inheritance of Behavior in Infants

1963 • 61 citations

THE PREDICTION OF SCHIZOPHRENIA IN INFANCY: III. A TEN-YEAR FOLLOW-UP REPORT OF NEUROLOGICAL AND PSYCHOLOGICAL DEVELOPMENT

1965 • 60 citations

GENETIC LINKAGE IN GRADED HUMAN CHARACTERS

1938 • 58 citations

A psychometric study of identical twins discordant for closed head injury.

1958 • 57 citations

Aspects of genetics in psychology.

1955 • 56 citations

The Genetic Factor in Autonomic Nervous System Function

1944 • 55 citations

INDIVIDUAL AND ENVIRONMENT. A PSYCHIATRIC-PSYCHOLOGICAL INVESTIGATION OF MONOZYGOTIC TWINS REARED APART.

1964 • 52 citations

A follow-up study of 128 closed head injuries in twins using cotwins as controls.

1958 • 52 citations

THE PRIMARY MENTAL ABILITIES OF CHINESE STUDENTS: A COMPARATIVE STUDY OF THE STABILITY OF A FACTOR STRUCTURE

1959 • 52 citations

A first approximation to nature-nurture ratios for eleven primary personality factors in objective tests.

1957 • 50 citations

How “stable” are heritability estimates? A comparison of heritability estimates from six anthropometric studies

1962 • 49 citations

Learning and growth in identical infant twins.

1929 • 47 citations

Hereditary factors in human growth.

1965 • 46 citations

Specific Dyslexia (Congenital Word-Blindness)

1952 • 46 citations

Autonomic Function in the Neonate: IV. Individual Differences in Cardiac Reactivity

1961 • 43 citations

THE RESEMBLANCE BETWEEN TWINS, A STATISTICAL EXAMINATION OF LAUTERBACH'S MEASUREMENTS

1925 • 41 citations

Twin Resemblances in Motor Skills, and the Effect of Practice Thereon

1933 • 41 citations

Concepts of personality

1963 • 41 citations

An Experimental Study of the Inheritance of Intelligence

1954 • 39 citations

The Closure Factors Related to Temperament¹

1952 • 39 citations

A sex difference in the age of onset of the parent-child resemblance in intelligence.

1963 • 38 citations

Data for X‐mapping calculations, Israeli families tested for Xg, g‐6‐pd and for colour vision

1963 • 33 citations

The use of multi-allele genetic characters in the diagnosis of twin zygosity.

1955 • 32 citations

The brain-wave pattern, an hereditary trait; evidence from 74 "normal" pairs of twins.

1945 • 31 citations

THE STUDY OF MOTOR DEVELOPMENT IN INFANCY AND ITS RELATIONSHIP TO PSYCHOLOGICAL FUNCTIONING

1961 • 30 citations

MENTAL AND PHYSICAL TRAITS OF IDENTICAL TWINS REARED APART

1929 • 30 citations

The structure of abilities at the preschool ages: Hypothesized domains.

1960 • 30 citations

AN INVESTIGATION OF SIMILARITIES IN PARENT‐CHILD TEST SCORES FOR EVIDENCE OF HEREDITARY COMPONENTS

1963 • 27 citations

Some methodological problems in Cattell's Multiple Abstract Variance Analysis.

1965 • 26 citations

Psychophysiological reactions of twins: Hereditary factors in galvanic skin resistance, heartbeat, and breathing rates

1965 • 25 citations

THE LINKAGE RELATIONS OF HEMOPHILIA A AND HEMOPHILIA B (CHRISTMAS DISEASE) TO THE XG BLOOD GROUP SYSTEM.

1963 • 25 citations

F. Vogel: Über die Erblichkeit des normalen Elektroenzephalogramms. kart., 92 S., Preis DM - G. Thieme Verlag, Stuttgart, 1958.

1959 • 25 citations

Phenylketonuria: a linkage study using phenylalanine tolerance tests.

1960 • 24 citations

Primary Abilities at Mental Age Six

1962 • 23 citations

Some Factors in the Affectional Adjustment of Twins

1954 • 23 citations

Pattern of correlations in the skeleton of the growing hand

1963 • 22 citations

The Pickford-Nicolson anomaloscope for testing and measuring colour sensitivity and colour blindness, and other tests and experiments.

1960 • 22 citations

Testing a model of dominant inheritance for metric traits in man

1964 • 22 citations

Galvanic Skin Reflex in Newborn Humans

1965 • 19 citations

TWINS : A PSYCHIATRIC STUDY OF A NEUROTIC GROUP

1964 • 17 citations

Family Studies of the Facial Complex

1963 • 16 citations

Über die Erblichkeit des normalen Elektroenzephalogramms

1959 • 15 citations

Neonatal Electrocardiographic Responses to Sound: Methodology

1962 • 14 citations

Factor Analytic Studies of the Lincoln Oseretsky Test of Motor Proficiency

1964 • 14 citations

Reputation Differences in Like-Sex Twins

1932 • 13 citations

A STUDY OF PROCESS AND METHOD IN THREE-YEAR-OLD TWINS AND TRIPLETS LEARNING TO READ.

1965 • 12 citations

Vital statistics of schizophrenia.

1958 • 11 citations

A BRITISH PAIR OF IDENTICAL TWINS REARED APART

1934 • 11 citations

Diagrams of the Unconscious

1949 • 10 citations

Penetrance calculus in population genetics.

1956 • 10 citations

Flicker fusion thresholds in control subjects and identical twins

1960 • 10 citations

The percentages of concordance in twins and mode of inheritance

1957 • 9 citations

Zur Methodik erbpsychologischer Untersuchungen in einem Zwillingslager

1937 • 9 citations

Review of Psychological studies in twin differences.

1950 • 8 citations

Functional and adaptive aspects of cellular regulatory mechanisms.

1965 • 7 citations

Some Practical Considerations in Testing for Genetic Linkage in Sib Data

1939 • 7 citations

UNIOVULAR TWINS BROUGHT UP APART

1957 • 7 citations

Genetics and Personality

2017 • 6 citations

Investigation of the Higher Nervous Activity and of Certain Vegetative Features in Twins

1963 • 6 citations

Genetic factors in the selection and rejection of Szondi's pictures: A study of twins.

1952 • 6 citations

Metodiken vid den första läsundervisningen : en översikt och experimentella bidrag

1956 • 6 citations

Twinning as a factor influencing personality.

1939 • 6 citations

THE SELF‐EXPRESSION OF IDENTICAL TWINS IN HANDWRITING AND DRAWING

1932 • 5 citations

Similarity in IQ of Separated Identical Twins as Related to Length of Time Spent in Same Environment

1963 • 4 citations

Szondi Test Protocols of Monozygotic and Dizygotic Twin Populations

1961 • 3 citations

The path between genes and behavioral characters

1956 • 1 citations