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Weisman, O.; Feldman, R.; Burg-Malki, M.; Keren, M.; Geva, R.; Diesendruck, G.; Gothelf, D. – Journal of Intellectual Disability Research, 2017
Background: Numerous studies have assessed the socio-cognitive profile in Williams syndrome (WS) and, independently, in 22q11.2 deletion syndrome (22q11.2DS). Yet, a cross-syndrome comparison of these abilities between individuals with these two syndromes with known social deficits has not been conducted. Methods: Eighty-two children participated…
Descriptors: Comparative Analysis, Intellectual Disability, Intelligence Tests, Interpersonal Competence
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Deater-Deckard, Kirby – International Journal of Behavioral Development, 2016
Most of the individual difference variance in the population is found "within" families, yet studying the processes causing this variation is difficult due to confounds between genetic and nongenetic influences. Quasi-experiments can be used to test hypotheses regarding environment exposure (e.g., timing, duration) while controlling for…
Descriptors: Quasiexperimental Design, Genetics, Short Term Memory, Individual Differences
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van Hulst, Branko M.; de Zeeuw, Patrick; Bos, Dienke J.; Rijks, Yvonne; Neggers, Sebastiaan F. W.; Durston, Sarah – Journal of Child Psychology and Psychiatry, 2017
Background: Changes in reward processing are thought to be involved in the etiology of attention-deficit/hyperactivity disorder (ADHD), as well as other developmental disorders. In addition, different forms of therapy for ADHD rely on reinforcement principles. As such, improved understanding of reward processing in ADHD could eventually lead to…
Descriptors: Attention Deficit Hyperactivity Disorder, Task Analysis, Reinforcement, Therapy
Nisbett, Richard E. – American Educator, 2013
In 1994, America took a giant step backward in understanding intelligence and how it can be cultivated. Richard Herrnstein, a psychology professor at Harvard University, and Charles Murray, a political scientist with the American Enterprise Institute, published "The Bell Curve," a best-selling book that was controversial among…
Descriptors: Intelligence, Genetics, Prenatal Care, Racial Differences
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Lynn, Richard – Intelligence, 2012
Criticisms advanced by Felice and Giugliano (2011) of the thesis that IQs in Italy are higher in the north than in the south are answered and new data confirming the thesis are given from the PISA 2009 study and for math and reading abilities in the recent INVALSI study. New genetic data are given showing higher frequency of blond hair the…
Descriptors: Foreign Countries, Reading Ability, Mathematics, Intelligence Tests
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Oerlemans, Anoek M.; Hartman, Catharina A.; Bruijn, Yvette G. E.; Franke, Barbara; Buitelaar, Jan K.; Rommelse, Nanda N. J. – Journal of Child Psychology and Psychiatry, 2015
Background: We may improve our understanding of the role of common versus unique risk factors in attention-deficit/hyperactivity disorder (ADHD) by examining ADHD-related cognitive deficits in single- (SPX), and multi-incidence (MPX) families. Given that individuals from multiplex (MPX) families are likely to share genetic vulnerability for the…
Descriptors: Incidence, Attention Deficit Hyperactivity Disorder, Role, Neurological Impairments