The LIA project

LIA, short for Longitudinal Identity research in Adolescence, took place between 2017 and 2020. Funded by FWO, over 2200 adolescents were able to join the LIA project at school. Over the course of three years, our team collected over 700.000 survey responses, providing rich information on self-harm, identity development, personality, and a broad range of psychopathology markers. Thanks to the sustained efforts of the respondents and their schools, we were able to continue working towards a better understanding of youth mental health.

Since wrapping up the LIA project, 11 manuscripts were published by LIA team members.

Find out more below about the publications and the team.

Publication list

  • Comorbidity Between Non-suicidal Self-Injury Disorder and Borderline Personality Disorder in Adolescents: A Graphical Network Approach

    T. Buelens, G. Costantini, K. Luyckx, L. Claes (2020, Frontiers in Psychiatry, 10.3389/fpsyt.2020.580922)

    Full article

  • Identity Functioning and Eating Disorder Symptomatology: The Role of Cognitive Emotion Regulation Strategies

    M. Verschueren, L. Claes, N. Palmeroni, L. Raemen, T. Buelens, P. Moons, and K. Luyckx (2021, Frontiers in Psychology, 10.3389/fpsyg.2021.667235)

    Full article

  • Longitudinal development of non-suicidal self-injury disorder in adolescence: Prospective prediction of stability and change by identity development, depression, trauma, and resilience

    T. Buelens, K. Luyckx, A. Bogaerts, K. Raymaekers, L. Claes (2023, Journal of Affective Disorders, 10.1016/j.jad.2023.08.134)

    Full article

  • Investigating the DSM-5 criteria for non-suicidal self-injury disorder in a community sample of adolescents

    T. Buelens, K. Luyckx, G. Kiekens, A. Gandhi, J Muehlenkamp, L. Claes (2020, Journal of Affective Disorders, 10.1016/j.jad.2019.09.009)

    Full article

  • Identity synthesis and confusion in early to late adolescents: Age trends, gender differences, and associations with depressive symptoms

    A. Bogaerts, L. Claes, T. Buelens, M. Verschueren, N. Palmeroni, T. Bastiaens, K. Luyckx (2021, Journal of Adolescence, 10.1016/j.adolescence.2021.01.006)

    Full article

  • Personal identity, somatic symptoms, and symptom-related thoughts, feelings, and behaviors in adolescence: Examining between- and within-person associations and the role of depressive symptoms

    L. Raemen, L. Claes, T. Buelens, L. Vankerckhoven, L. Van Oudenhove, K. Luyckx (2023, Journal of Youth and Adolescence, 10.1007/s10964-023-01811-9)

    Full article

  • Identity Distress Throughout Adolescence and Emerging Adulthood: Age Trends and Associations With Exploration and Commitment Processes

    Palmeroni, N., Claes, L., Verschueren, M., Bogaerts, A., Buelens, T., & Luyckx, K. (2020, Emerging Adulthood, 10.1177/2167696818821803)

    Full article

  • The Self-Concept and Identity Measure in Adolescents: Factor Structure, Measurement Invariance, and Associations with Identity, Personality Traits, and Borderline Personality Features

    A Bogaerts, L. Claes, T. Buelens, A. Gandhi, G. Kiekens, T. Bastiaens, K. Luyckx (2021, European Journal of Psychological Assessment, 10.1027/1015-5759/a000623)

    Full article

  • Impairment in personality functioning throughout adolescence and co-development with personality traits, emotion regulation strategies, and psychopathology

    K. Eggermont, K. Raymaekers, L. Claes, T. Buelens, A. Bogaerts, K. Luyckx (2023, Journal of Research in Personality, 10.1016/j.jrp.2023.104380)

    Full article

  • Identity formation and psychopathological symptoms in adolescence: Examining developmental trajectories and co-development.

    Raemen, L., Claes, L., Palmeroni, N., Buelens, T., Vankerckhoven, L., & Luyckx, K. (2022, Journal of Applied Developmental Psychology, 10.1016/j.appdev.2022.101473)

    Full article

  • Trajectories of adaptive and disturbed identity dimensions in adolescence: developmental associations with self-esteem, resilience, symptoms of depression, and borderline personality disorder features

    A. Bogaerts,, L. Claes, K. Raymaekers, T. Buelens, T. Bastiaens, K. Luyckx (2023, Frontiers in Psychiatry, 10.3389/fpsyt.2023.1125812)

    Full article

The LIA Team

Previous

Self-injury media guidelines