Fraternal Twin | ScienceGate

Genetic-Environmental Interactions in Identical and Fraternal Twin Beef Cattle. I. Growth from 7 to 24 Months of Age

Journal of Animal Science ◽

10.2527/jas1971.3361177x ◽

1971 ◽

Vol 33 (6) ◽

pp. 1177-1185 ◽

Cited By ~ 5

Author(s):

D. D. Kress ◽

E. R. Hauser ◽

A. B. Chapman

Keyword(s):

Beef Cattle ◽

Fraternal Twin ◽

Environmental Interactions

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Possible Biological Advantages among Schizophrenics' Relatives

The British Journal of Psychiatry ◽

10.1192/bjp.118.545.453 ◽

1971 ◽

Vol 118 (545) ◽

pp. 453-460 ◽

Cited By ~ 40

Author(s):

Michael Carter ◽

C. A. H. Watts

Keyword(s):

Medical Research ◽

Research Council ◽

Genetic Factors ◽

Annual Report ◽

Medical Research Council ◽

Good Evidence ◽

Fraternal Twin

There is good evidence that genetic factors are necessary, though by no means sufficient, for the development of schizophrenia. Several studies have compared the incidence of schizophrenia in identical and in fraternal twin pairs: these studies are discussed, for example, in the Medical Research Council Annual Report 1965–66 (pp. 54–61), where Essen-Möller's (1963) cumulative figures are quoted: Identical (MZ) pairs: 69 per cent concordant for schizophrenia (both schizophrenic) (194/280 pairs). Fraternal (DZ) pairs: 13 per cent concordant for schizophrenia (both schizophrenic) (59/448 pairs).

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Selective Mutism: The Fraternal Twin of Childhood Social Phobia

Psychopathology ◽

10.1159/000444882 ◽

2016 ◽

Vol 49 (2) ◽

pp. 95-107 ◽

Cited By ~ 11

Author(s):

Angelika Gensthaler ◽

Verena Maichrowitz ◽

Michael Kaess ◽

Marc Ligges ◽

Christine M. Freitag ◽

...

Keyword(s):

Social Phobia ◽

Selective Mutism ◽

Fraternal Twin

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Maternal Accommodation in Infant-Directed Speech during Mother's and Twin-Infants' Vocal Interactions

Psychological Reports ◽

10.2466/pr0.2003.92.2.481 ◽

2003 ◽

Vol 92 (2) ◽

pp. 481-487 ◽

Cited By ~ 6

Author(s):

Katsuko Niwano ◽

Kuniaki Sugai

Keyword(s):

Fundamental Frequency ◽

Acoustic Analysis ◽

The Other ◽

Vocal Response ◽

Vocal Responses ◽

Fraternal Twin ◽

Maternal Speech ◽

Vocal Interactions ◽

Vocal Fundamental Frequency ◽

At Home

In this study a mother's instinctive accommodations of vocal fundamental frequency (f0) of infant-directed speech to two different infants was explored. Maternal speech directed to individual 3-mo.-old fraternal twin-infants was subjected to acoustic analysis. Natural samples of infant-directed speech were recorded at home. There were differences in the rate of infants' vocal responses. The mother changed her f0 and patterns of intonation contour when she spoke to each infant. When she spoke to the infant whose vocal response was less frequent than the other infant, she used a higher mean f0 and a rising intonation contour more than when she spoke to the other infant. The result suggested that the mother's speech characteristic is not inflexible and that the mother may use a higher f0 and rising contour as a strategy to elicit an infant's less frequent vocal response.

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