Behavior Genetics of Cognition Across the Lifespan (Advances in Behavior Genetics)
Language: English
Pages: 300
ISBN: 1461474469
Format: PDF / Kindle (mobi) / ePub
Along with psychopathology, cognition has been one of the primary phenotypic focal points of the field of behavior genetics since its inception. Francis Galton’s 1874 examination of eminent families in Britain was among the earliest attempts to investigate whether cognitive achievements run in families. This volume presents current methodologies for understanding cognitive abilities that move beyond the outdated nature vs. nurture paradigm. Recent advances in both collection and statistical modeling of twin data, particularly longitudinal twin data, make this an especially advantageous moment to produce a work that presents a collection of the groundbreaking research on cognitive abilities across the lifespan. This volume presents an overview of the current state of quantitative and molecular genetic investigations into the many facets of cognitive performance and functioning across the lifespan.
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et al. (2011) investigated interactions with environmental measures in the home and school. They found two significant interactions: The 10-SNP set was more strongly associated with mathematical ability in chaotic homes and when parents are negative. Linkage and association analyses have both been utilized in the search for genes affecting RD (see Smith et al. 2010 for a review). Segregation analyses have supported the existence of several genes of major effect, rather than many genes of small
Human Genetics, 14(2), 119–128. doi:10.1375/twin.14.2.119 Wadsworth, S. J. (1994). School achievement. In R. P. J. C. DeFries & D. W. Fulker (Ed.), Nature and nurture during middle childhood (pp. 86–101). Oxford: Blackwell. Wadsworth, S. J., Corley, R. P., Hewitt, J. K. Plomin, R., & DeFries, J. C. (2002). Parent-offspring resemblance for reading performance at 7, 12, and 16 years of age in the Colorado Adoption Project. Journal of Child Psychology and Psychiatry and Allied Disciplines, 43,
variety of carefully constructed phonological and language measures, two linkage peaks on chromosomes 6 and 15 showed significant interactions with continuous measures of the home language and literacy environment. Linkage effects were stronger in sib-pairs reared in relatively enriched environments. Taylor et al. (2010) studied the interaction between teacher quality and reading scores obtained from statewide testing in Florida in a sample of 280 MZ and 526 DZ twin pairs in the 1st and 2nd
1.00 0.73 0.46 0.44 e2 In cases with multiple relevant publications from same study, only the largest cross-sectional study is included here SATSA Swedish Adoption/Twin Study of Aging, MTSADA Minnesota Twin Study of Adult Development and Aging, LSADT Longitudinal Study of Aging Danish Twins, ITR Italian Twin Registrya Reared-together and reared-apart twin pairs combined for SATSA (Giubilei et al. 2008) ITR Study Citation Table 5.2 (continued) 142 W. Johnson et al. 5 Normative
impending death (Bosworth and Schaie 1999), which could attenuate twin similarity for cognitive ability when twins are not concordant for time at death (Johansson et al. 2004). Third, practice effects, which have been shown to exist and to vary in older samples even when retest intervals are long (Rabbitt et al. 2004; Singer et al. 2003) probably need further consideration than they have received to date. Finally, and perhaps most significantly, change has typically been assessed linearly. Yet
