Catalogue Search | MBRL
Are you sure you want to remove the book from the shelf?
{{itemTitle}}
166,272
result(s) for
"Twins"
Sort by:
Identical twins : the social construction and performance of identity in culture and society
In Identical Twins: The Social Construction and Performance of Identity in Culture and Society, Ncube conceptualizes twin identity as a multi-layered dynamic that changes through performance, and explores twin identity through a social constructionist approach.Until now, mainstream twin studies have mostly sought to explain social phenomena about twins from 'inside' the person, providing their explanations in terms of internal entities such as personality structures with an obvious underlying essentialist assumption. By examining the theories of Michel Foucault and Judith Butler, Ncube shows that the 'identity' of twins is managed in both an academic and cultural context, and in relation to specific audiences.Relocating the explanations that we gather in social research, including in qualitative research in psychology, the book focuses its enquiry on the social practices and interactions that people engage in with each other, not delving 'inside' the person. Using real-world twin accounts, the book maps out the social construction of twin identity, and allows for the twins' own voices to be examined in relation to twin experiences.Also addressing aspects of being misunderstood, as well as the idea of misunderstanding oneself, this is fascinating reading for students and researchers in critical and cultural psychology, and anyone interested in twin studies.
Book
F26 Identical twins .. Are they identical?
BackgroundReports of monozygotic HD twins are rare (Panas et al, 2008) and phenotypic concordance reported as the rule (Sudarsky et al, 1973). Reports are of twins with the same number of trinucleotide repeats, with different clinical behavioral difficulties but not significant motor differences (Gómed-Esteban et al, 2007). Such phenotypic discordance was reported as very rare (Friedman et al, 2005) and thus be used to explore environmental factors (Ketelaar, Hofstra and Hayden, 2012).Case HistoryTwo female monozygotic twins with HD were born 6 weeks premature and raised in the same environment. Voluntary predictive testing for HD was done when both (Heimler and Zanko, 1995) were aged 21 years. We will report on motor, neuropsychological and psychiatric manifestations along with MRI findings. Twin 2 required admission in 2015 while Twin 1 required admission in 2020.Twin 1 (first born): Referred to Liaison Psychiatry with Eating disorder and low mood aged 23, followed by two suicide attempts and aggressive impulsive behavior. Neurocognitive difficulties included memory impairment, dysarthria and balance difficulties, poor levels of motivation and self-care. OT assessment found a sensory level of activities and exploratory activities were required. MRI: Generalised and bifrontal cerebral atrophy appeared was unusual given the patient‘s age. There was no acute area of infarction on diffusion weighted imaging. Generalised cerebral and bifrontal cerebral atrophy noted.Twin 2: Diagnosed with a heart murmur aged 4 years and surgery aged 10 years. Presented at 18 years with low mood and history of OCD symptoms. Multiple episodes of self-harm and becoming more aggressive and violent. Irritability, impulsivity, and aggressive behavior has continued with word funding difficulties. OT assessment recommended exploratory level of activities. MRI: There was parenchymal atrophy reported, most marked in the frontal and temporal lobes with prominence of sulci and ventricles. Signal return from grey-white matter was normal.ConclusionA detailed comparison of motor, cognitive, and behavioural profile is currently in progress.
Journal Article
Take two! : a celebration of twins
This collection pairs poems and pictures in a salute to the many twins among us.
Book
The Danish Twin Registry: An Updated Overview
The Danish Twin Registry (DTR) was established in the 1950s, when twins born from 1870 to 1910 were ascertained, and has since been extended to include twins from birth cohorts until 2009. The DTR currently comprises of more than 175,000 twins from the 140 birth cohorts. This makes the DTR the oldest nationwide twin register and among the largest in the world. The combination of data from several surveys, including biological samples and repeated measurements on the same individuals, and data from Danish national registers provides a unique resource for a wide range of twin studies. This article provides an updated overview of the data in the DTR: First, we provide a summary of the establishment of the register, the different ascertainment methods and the twins included; then follows an overview of major surveys conducted in the DTR since 1994 and a description of the DTR biobank, including a description of the molecular data created so far; finally, a short description is given of the linkage to Danish national registers at Statistics Denmark and some recent examples of studies using the various data resources in the DTR are highlighted.
Journal Article
The shattered sun
The epic sword-and-sorcery Bound Gods fantasy series comes to its dark conclusion in this thrilling story of a vibrant world whose fate lies in the hands of vengeful gods and bold warriors. The world has been plunged into darkness . . . and only the scheming priest Joros might be able to bring back the sun. With his ragtag band of fighters--a laconic warrior, a pair of street urchins, a ruthless priestess, and an unhinged sorcerer--Joros seeks to defeat the ancient gods newly released from their long imprisonment. But the Twins have champions of their own, and powers beyond knowing . . . and the only sure thing is that they won't go down without a fight. The fate of the world hangs in the balance as the Twins aim to enact revenge on the parents that imprisoned them, and the world that spurned them. The Long Night has begun, and the shadows hide many secrets--including that the Twins themselves may not be as powerful as they would have everyone think. Joros and his allies must strike now--before the Twins can consolidate their power . . . and before they are allowed to shape the world in their vision.
Book
Genetic and environmental variation in educational attainment: an individual-based analysis of 28 twin cohorts
We investigated the heritability of educational attainment and how it differed between birth cohorts and cultural–geographic regions. A classical twin design was applied to pooled data from 28 cohorts representing 16 countries and including 193,518 twins with information on educational attainment at 25 years of age or older. Genetic factors explained the major part of individual differences in educational attainment (heritability: a
2
= 0.43; 0.41–0.44), but also environmental variation shared by co-twins was substantial (c
2
= 0.31; 0.30–0.33). The proportions of educational variation explained by genetic and shared environmental factors did not differ between Europe, North America and Australia, and East Asia. When restricted to twins 30 years or older to confirm finalized education, the heritability was higher in the older cohorts born in 1900–1949 (a
2
= 0.44; 0.41–0.46) than in the later cohorts born in 1950–1989 (a
2
= 0.38; 0.36–0.40), with a corresponding lower influence of common environmental factors (c
2
= 0.31; 0.29–0.33 and c
2
= 0.34; 0.32–0.36, respectively). In conclusion, both genetic and environmental factors shared by co-twins have an important influence on individual differences in educational attainment. The effect of genetic factors on educational attainment has decreased from the cohorts born before to those born after the 1950s.
Journal Article
One and the same : my life as an identical twin and what I've learned about everyone's struggle to be singular
Journalist Abigail Pogrebin, a twin herself, offers a poignant and personal look at what it's really like to live with one's mirror image and tells the story of many twins who struggle to balance intimacy and individuality.
Book
A Comprehensive Review of Digital Twin from the Perspective of Total Process: Data, Models, Networks and Applications
With the rapid development of industrial digitalization and intelligence, there is an urgent need to accurately depict the physical world in digital space, and, in turn, regulate and optimize the behavior of physical entities based on massive data collection and analysis. As a technology that combines virtual space and physical space, digital twin can satisfy all of the above needs, and has attracted widespread attention. Due to the promising application prospects of digital twins, both academia and industry have launched research in this field, and related studies have been conducted from different perspectives. Accordingly, some articles summarizing the existing work have also been published, but they are all from a single perspective, lacking a systematic introduction and summary. Based on this, this paper conducts a comprehensive review of the existing work on digital twins from four perspectives: data, model, network and application, and strives to gain a better understanding of the development of the field from the physical to the virtual and back to the physical. Meanwhile, current research challenges and future directions for the development of digital twins are all discussed.
Journal Article
A population-based twin study of the symptomatic diagnostic criteria for major depression that occur within versus outside of major depressive episodes
Are genetic risk factors for current depressive symptoms good proxies for genetic risk factors for syndromal major depression (MD)?
In over 9000 twins from the population-based Virginia Adult Twin Study of Psychiatric and Substance Use Disorders, the occurrence of all nine DSM symptomatic criteria for MD in the last year was assessed at personal interview and then grouped by their temporal co-occurrence. The DSM criteria which occurred outside (OUT)
inside of (IN) MD episodes were then separated. We calculated tetrachoric correlations for OUT and IN depressive criteria in monozygotic (MZ) and dizygotic (DZ) pairs and fitted univariate and bivariate ACE twin models using OpenMx.
The mean twin correlations (±95% CIs) for IN depressive criteria were substantially higher than for OUT depressive criteria in both MZ [+0.35 (0.32-0.38)
0.20 (0.17-0.24)] and DZ pairs [0.20 (0.17-0.24)
0.10 (0.04-0.16]. The mean IN-OUT cross-correlation in MZ and DZ pairs was modest [+0.15 (0.07-0.24) and +0.07 (0.03-0.12)]. The mean heritability estimates for the nine In
Out depressive criteria was 0.31 (0.22-0.41) and 0.15 (0.08-0.21), in MZ and DZ pairs, respectively. The mean genetic correlation between the nine IN and OUT depressive criteria was +0.07 (-0.07 to 0.21).
Depressive criteria occurring outside depressive episodes are less heritable than those occurring within. These two ways criteria can manifest are not closely genetically related. Current depressive symptoms - most of which are occurring outside of depressive episodes - are not, for genetic studies, good proxies for MD.
Journal Article