Anorexia Nervosa: Two Cases of Male—Female Dizygotic Adolescent Twins

Roberts, Nasreen; Zendel, Ivan

doi:10.1177/070674379604100512

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…Finally, the belief that closeness and similarity among twins becomes problematic might stem from numerous clinical case studies of twin psychopathology (e.g., Casimir, 1996;Castellet y Ballara & Bollea, 1994;Demarst & Winestine, 1955;Jarrett & McGarty, 1980;Lassers & Nordan, 1978;Leonard, 1961;Lewin, 1994;Paluszny & Gibson, 1974;Roberts & Zendel, 1996;Senekjian & Trad, 1994). Authors examining twin psychopathology often focus on excessive dependence and loss of identity for twins.…”

Section: Perceptionsmentioning

confidence: 99%

The perceptions, policy, and practice of educating twins: A review

Beauchamp

Brooks

2003

Psychology in the Schools

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Twin births are increasing at a rapid rate, yet many educational personnel throughout the world are unaware of the needs of twins in school. Stereotypical views of twins as pathologically close or excessively dependent pervade educational policies and practices, despite the fact that twins do not differ from singletons on rates of psychological disturbance. Research shows that many schools implement strict policies for classroom placement of twins, yet the effects of such policies on twins' development and educational attainment are currently unknown. Recommendations for school personnel and future directions for this formative area are discussed.

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Section: Perceptionsmentioning

confidence: 99%

The perceptions, policy, and practice of educating twins: A review

Beauchamp

Brooks

2003

Psychology in the Schools

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Perceived expressed emotion in the siblings and parents of hospitalized patients with anorexia nervosa

Moulds

Touyz

Schotte

et al. 2000

Int. J. Eat. Disord.

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Objective The present study investigated the relationship between the level of perceived Expressed Emotion (EE) of the siblings and parents of patients hospitalized with anorexia nervosa and its effect on weight gain and psychological functioning. Method The Level of Expressed Emotion (LEE) Scale was administered on admission to 19 patients with anorexia nervosa who completed the LEE three times so as to identify their perceptions of their relationship with their closest age sibling, mother, and father. They were also required to complete the Eating Disorder Inventory 2 (EDI‐2). Patients' closest age sibling completed the Family Attitude Scale (FAS). The patients' body mass index (BMI) was calculated 6 weeks later, and the EDI‐2 readministered. Results Perceived EE was not predictive of BMI change after 6 weeks of hospitalization. A composite perceived family EE score was a significant predictor of change on the Interpersonal Distrust, Maturity Fears, and Perfectionism subscales of the EDI‐2. Discussion These findings suggest that patients' perceptions of their relationships with their closest aged sibling, mother, and father are poor predictors of weight gain and improvement in psychological functioning following 6 weeks of inpatient treatment. © 2000 by John Wiley & Sons, Inc. Int J Eat Disord 27: 288–296, 2000.

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Genetic factors in anorexia nervosa

et al. 1999

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Anorexia nervosa is a severe and complex disorder with incompletely known vulnerability factors. It is generally recognized that anorexia nervosa is a familial disorder, but the majority of twin studies have shown that the concordance rate for monozygotic twins is higher (on average 44%) than for dizygotic twins (on average 12.5%). This difference in concordance rates shows that genetic factors, more than common familial environment, may explain why the 'anorexia nervosa' phenotype runs in families. In order to estimate the heritability in the broad sense of anorexia nervosa according to published familial and twin studies, we first assessed the intrapair correlation between monozygotic and dizygotic twins, and secondly calculated the deviation threshold of relatives of affected probands from the relative mean. In this review, we obtained an estimation of the heritability at 0.72 according to all published controlled familial studies (six references quoted in MEDLINE(R)), and 0.71 for all published twin studies (59 references quoted in MEDLINE(R)). This estimation is close to the ones previously proposed, between 0. 5 and 0.8. Familial and twin studies may also help to define the boundaries of the phenotype, shedding light on the complex relationship between anorexia nervosa on the one hand, and bulimia nervosa, mood disorders, and alcoholism on the other. Demonstrating the importance of genetic factors in anorexia nervosa, and more specifically for anorexia of the restrictive type, requires not only prospective and adoption studies (which are still lacking), but also genetic polymorphisms analyses, which began very recently.

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Anorexia Nervosa: Two Cases of Male—Female Dizygotic Adolescent Twins

Cited by 3 publications

References 2 publications

The perceptions, policy, and practice of educating twins: A review

The perceptions, policy, and practice of educating twins: A review

Perceived expressed emotion in the siblings and parents of hospitalized patients with anorexia nervosa

Genetic factors in anorexia nervosa

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