Claus Barkmann
Hamburg, HH, Germany
Last Updated: 09/26/2026
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Found 58 publications
Physical activity and mental health in children and adolescents during and after the COVID-19 pandemic: findings from the six-wave German COPSY study.
Journal: Frontiers in sports and active living
Published: December 27, 2025
Ten years of a gender identity service for children and adolescents in Germany: demographic and clinical patterns.
Journal: European child & adolescent psychiatry
Published: November 18, 2025
Does Infant Temperament Moderate the Relationship between Very Low Birth Weight and Behavioral Problems Over Six years?
Journal: Child psychiatry and human development
Published: June 14, 2025
"Alone Again, Naturally": Mental Health Problems, Level of Personality Functioning, Social Withdrawal and Loneliness in Adolescents Admitted as Acute Inpatients in the Aftermath of the COVID-19 Pandemic.
Journal: Children (Basel, Switzerland)
Published: October 14, 2023
Onset Age and Internalizing Problems in Adolescents with Gender Dysphoria: Is There an Association?
Journal: Archives of sexual behavior
Published: August 18, 2023
How social is social media for transgender and gender-diverse youth? Association of online social experiences with internalizing mental health problems.
Journal: European child & adolescent psychiatry
Published: August 13, 2023
Pediatric surgery and self-reported anxiety in children and their parents: A psychometric analysis of the state-trait operation anxiety (STOA) questionnaire.
Journal: Frontiers in pediatrics
Published: July 06, 2022
Binary and Non-binary Gender Identities, Internalizing Problems, and Treatment Wishes Among Adolescents Referred to a Gender Identity Clinic in Germany.
Journal: Archives of sexual behavior
Published: April 27, 2022
Child and Adolescent Mental Health During the COVID-19 Pandemic: Results of the Three-Wave Longitudinal COPSY Study.
Journal: The Journal of adolescent health : official publication of the Society for Adolescent Medicine
Published: February 12, 2022
Health-Related Quality of Life and mental health of families with children and adolescents affected by rare diseases and high disease burden: the perspective of affected children and their siblings.
Journal: BMC pediatrics
Published: February 06, 2022
Quality of life and mental health of children with rare congenital surgical diseases and their parents during the COVID-19 pandemic.
Journal: Orphanet journal of rare diseases
Published: August 26, 2021
Last Updated: 09/26/2026