Research Topics
| Peggy T Cohen-KettenisSummaryAffiliation: VU University Medical Center Country: The Netherlands Publications
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Detail Information
Publications
Adolescent anorexia nervosa patients have a discrepancy between neurophysiological responses and self-reported emotional arousal to psychosocial stressMarjo J S Zonnevylle-Bender
Department of Child and Adolescent Psychiatry, University Medical Center, Utrecht, The Netherlands
Psychiatry Res 135:45-52. 2005..The data indicate that AN patients, in contrast to healthy individuals, show a discordance between self-reported emotional and neurophysiological arousal during psychosocial stress...
Sex reassignment: outcomes and predictors of treatment for adolescent and adult transsexualsYolanda L S Smith
Department of Child and Adolescent Psychiatry, University Medical Centre Utrecht, The Netherlands
Psychol Med 35:89-99. 2005..We prospectively studied outcomes of sex reassignment, potential differences between subgroups of transsexuals, and predictors of treatment course and outcome...
Psychosocial and psychosexual aspects of disorders of sex developmentP T Cohen-Kettenis
Department of Medical Psychology, VU University, PO Box 7057, 1007 MB Amsterdam, The Netherlands
Best Pract Res Clin Endocrinol Metab 24:325-34. 2010..DSD-specific protocols and educational materials need to be developed to standardise and evaluate interventions in order to facilitate decision making of professionals and individuals with DSD and enhance psychosocial care in this area...
Treatment of adolescents with gender dysphoria in the NetherlandsPeggy T Cohen-Kettenis
Department of Medical Psychology and Medical Social Work, VU University Medical Center, Amsterdam, The Netherlands
Child Adolesc Psychiatr Clin N Am 20:689-700. 2011..Although more studies are necessary, this approach seems to contribute significantly to the well-being of gender dysphoric adolescents...
Puberty suppression in a gender-dysphoric adolescent: a 22-year follow-upPeggy T Cohen-Kettenis
Department of Medical Psychology and Medical Social Work, VU University Medical Center, Amsterdam, The Netherlands
Arch Sex Behav 40:843-7. 2011..This first report on long-term effects of puberty suppression suggests that negative side effects are limited and that it can be a useful additional tool in the diagnosis and treatment of gender dysphoric adolescents...
The DSM diagnostic criteria for gender identity disorder in adolescents and adultsPeggy T Cohen-Kettenis
Department of Medical Psychology, VU University Medical Center, P O Box 7057, 1007 MB Amsterdam, The Netherlands
Arch Sex Behav 39:499-513. 2010..g., onset age) are more appropriate...
Psychological long-term outcome in intersex conditionsPeggy Cohen-Kettenis
Department of Medical Psychology, VU University Medical Center, Amsterdam, The Netherlands
Horm Res 64:27-30. 2005..Recent reviews on gender dysphoria and gender change in patients with intersex conditions show that initial gender assignment still seems to be the best predictor of adult gender identity...
Gender change in 46,XY persons with 5alpha-reductase-2 deficiency and 17beta-hydroxysteroid dehydrogenase-3 deficiencyPeggy T Cohen-Kettenis
Department of Medical Psychology, VU University Medical Center, P O Box 7057, 1007 MB, Amsterdam, The Netherlands
Arch Sex Behav 34:399-410. 2005..The changes were usually made in adolescence and early adulthood. In these two syndromes, the degree of external genital masculinization at birth does not seem to be related to gender role changes in a systematic way...
Quality of life of adult retinoblastoma survivors in the NetherlandsJennifer van Dijk
Department of Medical Psychology, VU University Medical Center Amsterdam, The Netherlands
Health Qual Life Outcomes 5:30. 2007..To assess the quality of life (QoL) and predictors thereof in Dutch adult hereditary and non-hereditary retinoblastoma (RB) survivors...
Relationships between sex hormones assessed in amniotic fluid, and maternal and umbilical cord serum: what is the best source of information to investigate the effects of fetal hormonal exposure?Cornelieke van de Beek
Department of Child and Adolescent Psychiatry, University Medical Centre Utrecht, and the Rudolf Magnus Institute for Neurosciences, Utrecht, The Netherlands
Horm Behav 46:663-9. 2004..Our data show that, of all available sources, amniotic fluid seems to be the best candidate to investigate the effects of early fetal androgen exposure...
Behavior and socioemotional functioning in 9-18-year-old children born after in vitro fertilizationKarin Wagenaar
Department of Medical Psychology and Institute for Clinical and Experimental Neurosciences, VU University Medical Center, Amsterdam, The Netherlands
Fertil Steril 92:1907-14. 2009..Behavior and socioemotional functioning of children born after IVF and spontaneously from parents with former fertility problems were studied, to control for parental factors and investigate the role of IVF on the children's functioning...
Restrictions in daily life after retinoblastoma from the perspective of the survivorsJennifer van Dijk
Department of Medical Psychology, VU University Medical Center, Amsterdam, The Netherlands
Pediatr Blood Cancer 54:110-5. 2010..Little is known about the impact of retinoblastoma (RB) on the health status of survivors in terms of disabilities and worries, both of which may restrict participation in activities of daily life...
Self-reported behavioral and socioemotional functioning of 11- to 18-year-old adolescents conceived by in vitro fertilizationKarin Wagenaar
Department of Medical Psychology and Institute for Clinical and Experimental Neurosciences, VU University Medical Center, Amsterdam, The Netherlands
Fertil Steril 95:611-6. 2011..To evaluate the self-reported psychosocial well-being of 11- to 18-year-old adolescents who were conceived by in vitro fertilization (IVF) and examine the role of IVF conception on behavior...
Comparing adult and adolescent transsexuals: an MMPI-2 and MMPI-A studyAnnelou L C de Vries
Department of Child and Adolescent Psychiatry, VU University Medical Center, Amsterdam, The Netherlands
Psychiatry Res 186:414-8. 2011..Most remarkably, significantly more adults with GID scored in the clinical range on two or more clinical scales than adolescents with GID. Therefore, early medical intervention may be recommendable for adolescents with GID...
Emotional functioning in anorexia nervosa patients: adolescents compared to adultsMarjo J S Zonnevylle-Bender
Department of Child and Adolescent Psychiatry, University Medical Center, Utrecht, The Netherlands
Depress Anxiety 19:35-42. 2004..Adult and adolescent AN patient groups do not differ substantially with respect to emotional functioning...
Psychiatric comorbidity in gender dysphoric adolescentsAnnelou L C de Vries
Departments of Child and Adolescent Psychiatry Medical Psychology, VU University Medical Center, Amsterdam, The Netherlands
J Child Psychol Psychiatry 52:1195-202. 2011..We focused on its relation to gender, type of GID diagnosis and eligibility for medical interventions (puberty suppression and cross-sex hormones)...
Aggression and psychopathology in detained adolescent femalesSannie M J J Hamerlynck
VU University Medical Center, Department of Child and Adolescent Psychiatry, c o De Bascule, P O Box 303, 1115 ZG Duivendrecht, The Netherlands
Psychiatry Res 159:77-85. 2008..Since the current study was cross-sectional, the predictive effect of the investigated relationships should be the focus of further study...
Cross-national replication of the gender identity interview for childrenMadeleine S C Wallien
Gender Clinic, VU Medical Centre, Amsterdam, The Netherlands
J Pers Assess 91:545-52. 2009..In this cross-national study, we are the first to report on the validity of this measure to discriminate children with gender identity disorder from controls outside of North America...
Clinical management of gender dysphoria in children and adolescents: the Dutch approachAnnelou L C de Vries
VU University Medical Center, Amsterdam, The Netherlands
J Homosex 59:301-20. 2012..Currently, withholding physical medical interventions in these cases seems more harmful to wellbeing in both adolescence and adulthood when compared to cases where physical medical interventions were provided...
Puberty suppression in adolescents with gender identity disorder: a prospective follow-up studyAnnelou L C de Vries
Department of Child and Adolescent Psychiatry, VU University Medical Center, Amsterdam, The Netherlands
J Sex Med 8:2276-83. 2011..The purpose of this intervention is to relieve the suffering caused by the development of secondary sex characteristics and to provide time to make a balanced decision regarding actual gender reassignment...
Is there an effect of prenatal testosterone on aggression and other behavioral traits? A study comparing same-sex and opposite-sex twin girlsCelina C C Cohen-Bendahan
Department of Child and Adolescent Psychiatry, A01 468, University Medical Center Utrecht, P O Box 85500, 3508 GA Utrecht, The Netherlands
Horm Behav 47:230-7. 2005..It is argued that it is unlikely that this difference is due to social factors, such as a gender-specific upbringing...
Transsexual subtypes: clinical and theoretical significanceYolanda L S Smith
Department of Child and Adolescent Psychiatry, University Medical Center, Utrecht, The Netherlands
Psychiatry Res 137:151-60. 2005..The more vulnerable nonhomosexual transsexuals may particularly benefit from additional professional guidance before and/or during treatment...
Desisting and persisting gender dysphoria after childhood: a qualitative follow-up studyThomas D Steensma
Department of Medical Psychology, VU University Medical Centre, Amsterdam, The Netherlands
Clin Child Psychol Psychiatry 16:499-516. 2011..Although, both persisters and desisters reported a desire to be the other gender during childhood years, the underlying motives of their desire seemed to be different...
2D:4D finger-length ratios in children and adults with gender identity disorderMadeleine S C Wallien
Gender Clinic, VU University Medical Center, Amsterdam, The Netherlands
Horm Behav 54:450-4. 2008..This last finding was consistent with the prediction that a variance in prenatal hormone exposure contributes to a departure from a sex-typical gender identity in women...
The treatment of adolescent transsexuals: changing insightsPeggy T Cohen-Kettenis
Department of Medical Psychology, VU University Medical Center, Amsterdam, The Netherlands
J Sex Med 5:1892-7. 2008..Professionals largely follow the Standards of Care of the World Professional Association for Transgender Health. For adolescents, specific guidelines have also been issued by the British Royal College of Psychiatrists...
Preference for aggressive and sexual stimuli in children with disruptive behavior disorder and normal controlsStephanie H M van Goozen
Department of Child and Adolescent Psychiatry, University Medical Centre Utrecht, Utrecht, The Netherlands
Arch Sex Behav 31:247-53. 2002..The implications of these findings were discussed and it was concluded that sexuality is clearly an important topic to address in aggressive children in general and not only in the abused ones...
A comparison of educational achievement in a national sample of Dutch female twins and their matched singleton controlsCelina C C Cohen
Department of Child and Adolescent Psychiatry, University Medical Centre Utrecht, and the Rudolf Magnus Institute for Neurosciences, The Netherlands
Twin Res 5:273-6. 2002..We therefore conclude on the basis of a comparison with the performance of the total Dutch female population that there are no differences in educational achievement between female twins and singletons...
Organizing and activating effects of sex hormones in homosexual transsexualsStephanie H M van Goozen
Department of Child and Adolescent Psychiatry, University Medical Center Utrecht, The Netherlands
Behav Neurosci 116:982-8. 2002..Homosexual transsexuals, who prior to hormone treatment scored in the direction of the opposite sex, may have reached a ceiling in performance and therefore do not benefit from activating hormonal effects...
Health-related quality of life of child and adolescent retinoblastoma survivors in the NetherlandsJennifer van Dijk
Department of Medical Psychology, VU University Medical Center Amsterdam, The Netherlands
Health Qual Life Outcomes 5:65. 2007..To assess health-related quality of life (HRQoL) in children (8-11 years) and adolescents (12-18 years) who survived retinoblastoma (RB), by means of the KIDSCREEN self-report questionnaire and the proxy-report version...
Peer group status of gender dysphoric children: a sociometric studyMadeleine S C Wallien
Department of Medical Psychology, VU University Medical Center, P O Box 7057, 1007 MB, Amsterdam, The Netherlands
Arch Sex Behav 39:553-60. 2010..The social position of gender-referred boys was less favorable than that of gender-referred girls. However, the gender-referred children were not more often bullied than other children, despite their gender nonconforming behavior...
Maternal serum steroid levels are unrelated to fetal sex: a study in twin pregnanciesCelina C C Cohen-Bendahan
Department of Child and Adolescent Psychiatry, University Medical Center Utrecht, and the Rudolf Magnus Institute of Neuroscience, The Netherlands
Twin Res Hum Genet 8:173-7. 2005..It is concluded that the source of prenatal T exposure in females probably comes from the fetal unit, which is the direct route of fetal hormone transfer...
Autism spectrum disorders in gender dysphoric children and adolescentsAnnelou L C de Vries
Department of Child and Adolescent Psychiatry, VU University Medical Center, Amsterdam, The Netherlands
J Autism Dev Disord 40:930-6. 2010..The incidence of ASD in this sample of children and adolescents was 7.8% (n = 16). Clinicians should be aware of co-occurring ASD and GID and the challenges it generates in clinical management...
A parent-report Gender Identity Questionnaire for Children: A cross-national, cross-clinic comparative analysisPeggy T Cohen-Kettenis
Gender Clinic for Children, Adolescents and Adults, Free University Medical Center, Amsterdam, The Netherlands
Clin Child Psychol Psychiatry 11:397-405. 2006..The results also provide some support for cross-clinic consistency in clinician-based diagnosis of GID...
Sibling sex ratio and birth order in early-onset gender dysphoric adolescentsSebastian E E Schagen
Department of Pediatric Endocrinology, VU University Medical Centre, Amsterdam, The Netherlands
Arch Sex Behav 41:541-9. 2012..The mechanisms underlying these phenomena remain unknown...
Puberty suppression in gender identity disorder: the Amsterdam experienceBaudewijntje P C Kreukels
Department of Medical Psychology and Medical Social Work and Neuroscience Campus, VU University Medical Center, Amsterdam, The Netherlands
Nat Rev Endocrinol 7:466-72. 2011..From the studies that have been published thus far, it seems that the benefits outweigh the risks. However, more systematic research in this area is needed to determine the safety of this approach...
Disorders of sex development and gender identity outcome in adolescence and adulthood: understanding gender identity development and its clinical implicationsAnnelou L C de Vries
Department of Child and Adolescent Psychiatry, VU University Medical Centre, Amsterdam, The Netherlands
Pediatr Endocrinol Rev 4:343-51. 2007..Clinicians should be aware of, but not overestimate the influences of neurobiological factors in gender development...
Physiological correlates of anxiety in children with gender identity disorderMadeleine S C Wallien
Department of Medical Psychology, VU University Medical Center, P O Box 7057, 1007, MB, Amsterdam, The Netherlands
Eur Child Adolesc Psychiatry 16:309-15. 2007..In this study we assessed anxiety and stress in children with GID by measuring their cortisol, heart rate (HR) and skin conductance levels (SCL) and asking them to repeat their moods and experience of control...
Psychiatric comorbidity among children with gender identity disorderMadeleine S C Wallien
Department of Medical Psychology and Institute for Clinical and Experimental Neurosciences, Graduate School of Neurosciences, at the VU University Medical Center, Amsterdam
J Am Acad Child Adolesc Psychiatry 46:1307-14. 2007..To investigate the prevalence and type of comorbidity in children with gender identity disorder (GID)...
Prenatal sex hormones (maternal and amniotic fluid) and gender-related play behavior in 13-month-old InfantsCornelieke van de Beek
Department of Child and Adolescent Psychiatry, VU University Medical Center, Duivendrecht, Amsterdam, The Netherlands
Arch Sex Behav 38:6-15. 2009..It may also be that the effect size of this relationship is so small that it should be investigated with more sensitive measures or in larger populations...
Psychosexual outcome of gender-dysphoric childrenMadeleine S C Wallien
Department of Medical Psychology, Graduate School of Neurosciences, VU University Medical Center, Amsterdam, The Netherlands
J Am Acad Child Adolesc Psychiatry 47:1413-23. 2008..To establish the psychosexual outcome of gender-dysphoric children at 16 years or older and to examine childhood characteristics related to psychosexual outcome...
Executive functioning in children: a comparison of hospitalised ODD and ODD/ADHD children and normal controlsStephanie H M van Goozen
Department of Child and Adolescent Psychiatry, University Medical Centre Utrecht, The Netherlands
J Child Psychol Psychiatry 45:284-92. 2004..We tested the hypothesis that oppositional-defiant disorder (ODD) children with or without attention deficit hyperactivity disorder (ADHD) have problems in executive functioning...
An overview of studies on early development, cognition, and psychosocial well-being in children born after in vitro fertilizationKarin Wagenaar
Department of Medical Psychology, VU University Medical Center, Amsterdam, The Netherlands
J Dev Behav Pediatr 29:219-30. 2008....
Demographic characteristics, social competence, and behavior problems in children with gender identity disorder: a cross-national, cross-clinic comparative analysisPeggy T Cohen-Kettenis
Gender Clinic, Department of Child and Adolescent Psychiatry, University Medical Center, Utrecht, The Netherlands
J Abnorm Child Psychol 31:41-53. 2003..The most salient demographic difference was age at referral. Cross-national differences in factors that might influence referral patterns are discussed...
Postoperative psychological functioning of adolescent transsexuals: a Rorschach studyYolanda L S Smith
Department of Child and Adolescent Psychiatry, University Medical Center Utrecht, Rudolph Magnus Institute for Neurosciences, Utrecht, The Netherlands
Arch Sex Behav 31:255-61. 2002..The Rorschach findings are consistent with questionnaire data from earlier studies, with the exception that the Rorschach data may point to some improvement in reality testing...
The effectiveness of an experimental treatment when compared to care as usual depends on the type of care as usualNicolle M H van de Wiel
RINO Group Utrecht, The Netherlands
Behav Modif 31:298-312. 2007..The effect sizes of difference scores on other variables were more in favor of UCPP when compared to FT than to BT. The comparison of an experimental treatment to care as usual depends on the type of usual treatment...
Social, intimate and sexual relationships of adolescents with cerebral palsy compared with able-bodied age-matesDiana J H G Wiegerink
Department of Rehabilitation, Erasmus MC, University Medical Centre, Rotterdam, The Netherlands
J Rehabil Med 40:112-8. 2008..To describe the social, intimate and sexual relationships of Dutch adolescents with cerebral palsy compared with their able-bodied age mates...
Prenatal exposure to testosterone and functional cerebral lateralization: a study in same-sex and opposite-sex twin girlsCelina C C Cohen-Bendahan
Department of Psychiatry, University Medical Center St Radboud, Nijmegen, The Netherlands
Psychoneuroendocrinology 29:911-6. 2004..Secondly, as predicted OS girls had a more masculine pattern of cerebral lateralization, than SS girls. These findings support the notion of an influence of prenatal T on early brain organization in girls...
Emotional functioning in adolescent anorexia nervosa patients--a controlled studyMarjo J S Zonnevylle-Bender
Rudolph Magnus Institute for Neurosciences, Utrecht, The Netherlands
Eur Child Adolesc Psychiatry 13:28-34. 2004..No differences between the three groups were found on the non-emotional, cognitive tasks. CONCLUSION: Both the AN and PSYCH patients show deficits in their processing of emotional information and details are discussed...
