Publications by authors named "Gemma Knowles"

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The silent crisis in girls' mental health.
Zui C Narita, Gemma Knowles, Syudo Yamasaki, Kiyoto Kasai, Atsushi Nishida

Nat Hum Behav· December 2025

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Bullying victimisation, coping, and self-harm among adolescents from diverse inner-city London schools: an accelerated cohort study.
Emma Wilson-Lemoine, Rina Dutta, Colette Hirsch, Gemma Knowles, Stephanie Smith

Child Adolesc Psychiatry Ment Health· December 2025

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Adverse childhood experiences and mental health of sexual and gender minorities in Canada, USA, and Japan.
Miharu Nakanishi, Gemma Knowles, Syudo Yamasaki, Satoshi Yamaguchi, Atsushi Nishida

Psychiatry Res· October 2025

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Peer-friendship Networks and Self-harm among Adolescents from Inner-city Schools: A Social Network Study.
Holly Crudgington, Rachel Blakey, Molly Copeland, Charlotte Gayer-Anderson, Samantha Davis, Gemma Knowles

J Youth Adolesc· October 2025

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Bullying Victimization and Self-Harm Among Adolescents from Diverse Inner-City Schools: Variation by Bullying Sub-Types and the Role of Sex.
Emma Wilson-Lemoine, Colette Hirsch, Gemma Knowles, Stephanie Smith, Rachel Blakey

Arch Suicide Res· August 2025

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Problematic online gaming mediates the association between attention-deficit/hyperactivity and subsequent mental health issues in adolescents.
Zui C Narita, Jordan DeVylder, Gemma Knowles, Shuntaro Ando, Syudo Yamasaki

Commun Psychol· August 2025

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Investigating the association between the number of interpersonal supporters during first-time pregnancy and postpartum depression symptoms.
Junko Niimura, Syudo Yamasaki, Miharu Nakanishi, Satoshi Yamaguchi, Kaori Baba, Gemma Knowles

Epidemiol Psychiatr Sci· June 2025

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"We're not one-box issue people": Intersectional perspectives on LGBTQ+ mental health in schools: A UK qualitative study with students, staff and training providers.
Charlotte Woodhead, Amy Morgan, Ibrahim Sabra, Sara Sabra, Lukasz Konieczka, Gemma Knowles

Acta Psychol (Amst)· April 2025

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Trajectories of depressive symptoms among young people in London, UK, and Tokyo, Japan: a longitudinal cross-cohort study.
Gemma Knowles, Daniel Stanyon, Syudo Yamasaki, Mitsuhiro Miyashita, Charlotte Gayer-Anderson

Lancet Child Adolesc Health· April 2025

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Immersive virtual reality as a novel approach to investigate the association between adverse events and adolescent paranoid ideation.
Charlotte Gayer-Anderson, Gemma Knowles, Stephanie Beards, Alice Turner, Daniel Stanyon

Soc Psychiatry Psychiatr Epidemiol· February 2025

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Gender inequalities in the disruption of long-term life satisfaction trajectories during the COVID-19 pandemic and the role of time use: evidence from a prospective cohort study.
Darío Moreno-Agostino, Jenny Chanfreau, Gemma Knowles, Alina Pelikh, Jayati Das-Munshi

BJPsych Open· December 2024

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Intersectionality informed and narrative-shifting whole school approaches for LGBTQ+ secondary school student mental health: A UK qualitative study.
Amy Morgan, Emily Cunningham, Juliet Dyrud, Liberty Elliott, Lauren Ige, Gemma Knowles

PLoS One· July 2024

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Sex Differences in Adolescent Depression Trajectory Before and Into the Second Year of COVID-19 Pandemic.
Mariko Hosozawa, Shuntaro Ando, Satoshi Yamaguchi, Syudo Yamasaki, Jordan DeVylder, Gemma Knowles

J Am Acad Child Adolesc Psychiatry· May 2024

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Uncovering associations between gender nonconformity, psychosocial factors, and mental health in adolescents: a birth cohort study.
Zui Narita, Jordan DeVylder, Syudo Yamasaki, Shuntaro Ando, Kaori Endo, Gemma Knowles

Psychol Med· April 2024

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Qualitative digital diary methods: participant-led values for ethical and insightful mental health research.
Catherine McCombie, Georgina Miguel Esponda, Hannah Ouazzane, Gemma Knowles, Charlotte Gayer-Anderson

Int J Qual Methods· January 2024

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Covid-19, social restrictions, and mental distress among young people: a UK longitudinal, population-based study.
Gemma Knowles, Charlotte Gayer-Anderson, Alice Turner, Lynsey Dorn, Joseph Lam

J Child Psychol Psychiatry· November 2022

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Cohort Profile: Resilience, Ethnicity and AdolesCent mental Health (REACH).
Gemma Knowles, Charlotte Gayer-Anderson, Rachel Blakey, Samantha Davis, Katie Lowis

Int J Epidemiol· October 2022

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Correction to: Prevalence of conduct problems and social risk factors in ethnically diverse inner-city schools.
Rachel Blakey, Craig Morgan, Charlotte Gayer-Anderson, Sam Davis, Stephanie Beards, Gemma Knowles

BMC Public Health· November 2021

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Prevalence of conduct problems and social risk factors in ethnically diverse inner-city schools.
Rachel Blakey, Craig Morgan, Charlotte Gayer-Anderson, Sam Davis, Stephanie Beards, Gemma Knowles

BMC Public Health· May 2021

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Mental distress among young people in inner cities: the Resilience, Ethnicity and AdolesCent Mental Health (REACH) study.
Gemma Knowles, Charlotte Gayer-Anderson, Stephanie Beards, Rachel Blakey, Samantha Davis

J Epidemiol Community Health· February 2021

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Migration, ethnicity and psychoses: evidence, models and future directions.
Craig Morgan, Gemma Knowles, Gerard Hutchinson

World Psychiatry· October 2019

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An international prospective cohort study of mobile phone users and health (COSMOS): Factors affecting validity of self-reported mobile phone use.
Mireille B Toledano, Anssi Auvinen, Giorgio Tettamanti, Yang Cao, Maria Feychting, Gemma Knowles

Int J Hyg Environ Health· January 2018

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Physical activity and mental health: commentary on Suetani et al. 2016: common mental disorders and recent physical activity status: findings from a National Community Survey.
Gemma Knowles

Soc Psychiatry Psychiatr Epidemiol· July 2017

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Do children emotionally rehearse about their body image?
Fiona C M Ling, Alison M McManus, Gemma Knowles, Rich S W Masters, Remco C J Polman

J Health Psychol· September 2015

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Body size dissatisfaction among young Chinese children in Hong Kong: a cross-sectional study.
Gemma Knowles, Fiona Chun Man Ling, G Neil Thomas, Peymane Adab, Alison M McManus

Public Health Nutr· April 2015

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