Publications by authors named "Klaus Ranta"

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"I saw him as a human being, just an ordinary young person" therapists' perspectives on therapeutic alliance with youth exhibiting psychopathic traits.
Heidi Backman, Klaus Ranta, Marko Manninen, Nina Lindberg, Diana Ribeiro da Silva

Psychother Res· December 2025

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Prevalence of psychotic-like experiences and their association with depression symptoms among patients entering adolescent psychiatric care.
Niklas Granö, Sakari Lintula, Sebastian Therman, Mauri Marttunen, Virve Edlund, Klaus Ranta

Nord J Psychiatry· November 2024

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Associations of generalized anxiety and social anxiety symptoms with sleep duration, amount of intense exercise, and excessive internet use among adolescents.
Kati Kajastus, Olli Kiviruusu, Mauri Marttunen, Klaus Ranta

BMC Psychiatry· November 2024

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Associations of excessive internet use, sleep duration and physical activity with school absences: a cross-sectional, population-based study of adolescents in years 8 and 9.
Silja Kosola, Marianne Kullberg, Katja Melander, Janne Engblom, Klaus Ranta

Arch Dis Child· June 2024

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Mental health after the COVID-19 pandemic among Finnish youth: a repeated, cross-sectional, population-based study.
Olli Kiviruusu, Klaus Ranta, Maija Lindgren, Henna Haravuori, Yasmina Silén

Lancet Psychiatry· June 2024

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Associations of generalized anxiety and social anxiety with perceived difficulties in school in the adolescent general population.
Kati Kajastus, Henna Haravuori, Olli Kiviruusu, Mauri Marttunen, Klaus Ranta

J Adolesc· February 2024

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Social anxiety in Finnish adolescents from 2013 to 2021: change from pre-COVID-19 to COVID-19 era, and mid-pandemic correlates.
Klaus Ranta, Terhi Aalto-Setälä, Tiina Heikkinen, Olli Kiviruusu

Soc Psychiatry Psychiatr Epidemiol· January 2024

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Factor and network analysis of psychosis-like experiences and depressive symptoms in a sample of Finnish adolescents entering psychiatric services.
Niklas Granö, Sakari Lintula, Sebastian Therman, Mauri Marttunen, Ulla Lång, Klaus Ranta

Early Interv Psychiatry· December 2023

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Predictors of outcome after a time-limited psychosocial intervention for adolescent depression.
Pauliina Parhiala, Mauri Marttunen, Vera Gergov, Minna Torppa, Klaus Ranta

Front Psychol· November 2022

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Psychometric properties of the 7-item Generalized Anxiety Disorder Scale (GAD-7) in a large representative sample of Finnish adolescents.
Kati Tiirikainen, Henna Haravuori, Klaus Ranta, Riittakerttu Kaltiala-Heino, Mauri Marttunen

Psychiatry Res· February 2019

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Social phobia, depression and eating disorders during middle adolescence: longitudinal associations and treatment seeking.
Klaus Ranta, Juha Väänänen, Sari Fröjd, Rasmus Isomaa, Riittakerttu Kaltiala-Heino

Nord J Psychiatry· November 2017

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Psychometric properties of the Finnish version of the Young Person's Clinical Outcomes in Routine Evaluation (YP-CORE) questionnaire.
Vera Gergov, Jari Lahti, Mauri Marttunen, Jari Lipsanen, Chris Evans, Klaus Ranta

Nord J Psychiatry· May 2017

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Social Phobia and Educational and Interpersonal Impairments in Adolescence: A Prospective Study.
Klaus Ranta, Annette M La Greca, Riittakerttu Kaltiala-Heino, Mauri Marttunen

Child Psychiatry Hum Dev· August 2016

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Discrepancy between self-reported and interviewed psychosis risk symptoms: auditory distortions are the most reliably reported symptom by self-report.
Niklas Granö, Santeri Kallionpää, Marjaana Karjalainen, Mikko Roine, Klaus Ranta

Early Interv Psychiatry· April 2016

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Community-oriented family-based intervention superior to standard treatment in improving depression, hopelessness and functioning among adolescents with any psychosis-risk symptoms.
Niklas Granö, Marjaana Karjalainen, Klaus Ranta, Maija Lindgren, Mikko Roine

Psychiatry Res· March 2016

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Psychophysiological responses to eye contact in adolescents with social anxiety disorder.
Aki Myllyneva, Klaus Ranta, Jari K Hietanen

Biol Psychol· July 2015

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Cognition, imagery and coping among adolescents with social anxiety and phobia: testing the Clark and Wells model in the population.
Klaus Ranta, Martti T Tuomisto, Riittakerttu Kaltiala-Heino, Päivi Rantanen, Mauri Marttunen

Clin Psychol Psychother· January 2015

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Peer victimization and social phobia: a follow-up study among adolescents.
Klaus Ranta, Riittakerttu Kaltiala-Heino, Sari Fröjd, Mauri Marttunen

Soc Psychiatry Psychiatr Epidemiol· April 2013

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Social Anxiety Scale for Adolescents (SAS-A): measuring social anxiety among Finnish adolescents.
Klaus Ranta, Niina Junttila, Eero Laakkonen, Anni Uhmavaara, Annette M La Greca

Child Psychiatry Hum Dev· August 2012

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The Mini-Social Phobia Inventory: psychometric properties in an adolescent general population sample.
Klaus Ranta, Riittakerttu Kaltiala-Heino, Päivi Rantanen, Mauri Marttunen

Compr Psychiatry· July 2012

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Associations of social phobia and general anxiety with alcohol and drug use in a community sample of adolescents.
Sari Fröjd, Klaus Ranta, Riittakerttu Kaltiala-Heino, Mauri Marttunen

Alcohol Alcohol· September 2011

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Relationship between social phobia and depression differs between boys and girls in mid-adolescence.
Juha-Matti Väänänen, Sari Fröjd, Klaus Ranta, Mauri Marttunen, Mika Helminen

J Affect Disord· September 2011

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[Adolescent mental health promotion in school context].
Riittakerttu Kaltiala-Heino, Klaus Ranta, Sari Fröjd

Duodecim· December 2010

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Social phobia in Finnish general adolescent population: prevalence, comorbidity, individual and family correlates, and service use.
Klaus Ranta, Riittakerttu Kaltiala-Heino, Päivi Rantanen, Mauri Marttunen

Depress Anxiety· August 2009

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Associations between peer victimization, self-reported depression and social phobia among adolescents: the role of comorbidity.
Klaus Ranta, Riittakerttu Kaltiala-Heino, Mirjami Pelkonen, Mauri Marttunen

J Adolesc· February 2009

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