Aleksandra Lecei

ORCID: 0000-0003-0877-0520
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About
Contact & Profiles
Research Areas
  • Child and Adolescent Psychosocial and Emotional Development
  • Mental Health Research Topics
  • Early Childhood Education and Development
  • COVID-19 and Mental Health
  • Behavioral Health and Interventions
  • Identity, Memory, and Therapy
  • Cognitive Abilities and Testing
  • Suicide and Self-Harm Studies
  • Child Abuse and Trauma
  • Digital Mental Health Interventions
  • Bullying, Victimization, and Aggression
  • Psychological and Temporal Perspectives Research
  • Youth Substance Use and School Attendance
  • Stress Responses and Cortisol
  • Health and Well-being Studies
  • Action Observation and Synchronization
  • Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
  • Obesity, Physical Activity, Diet
  • Impact of Technology on Adolescents
  • Child and Animal Learning Development
  • Physical Activity and Health
  • Resilience and Mental Health
  • Attention Deficit Hyperactivity Disorder
  • Media Influence and Health
  • Family Support in Illness

KU Leuven
2017-2025

Center for Clinical Research (United States)
2023

VIB-KU Leuven Center for Brain & Disease Research
2023

University Medical Center Utrecht
2018

COVID-19 lockdown measures have profoundly impacted adolescent' daily life, with research suggesting an increase in irritability, stress, loneliness, and family conflict. A potential protective factor is parent-child relationship quality; however, no studies investigated this. We used data from SIGMA, a longitudinal, experience sampling cohort study, which N = 173 adolescents aged 11 to 20 were tested before during COVID-19. Multilevel analyses showed decreased daily-life irritability...

10.1111/jora.12657 article EN Journal of Research on Adolescence 2021-08-26

Background: Over half of all mental health conditions have their onset in adolescence. Large-scale epidemiological studies identified relevant environmental risk factors for problems. Yet, few focused on potential mediating inter- and intrapersonal processes daily life, hampering intervention development. Objectives: To investigate 1) the impact changes processes; 2) altered development (sub)clinical symptoms adolescents and; 3) extent to which mediate association between outcomes...

10.31234/osf.io/jp2fk preprint EN 2021-04-02

Abstract Aim Childhood adversity may result in a negative expectation of future interactions with others, also referred to as ‘threat anticipation’. It negatively impact on identity development, which subsequently influence how individuals deal their environment. Here, we examine the hypotheses that (1) synthesis is associated reduced anticipation threat, whereas opposite would be true for confusion, and (2) confusion exacerbates association between childhood threat anticipation. Methods One...

10.1111/eip.13511 article EN Early Intervention in Psychiatry 2024-02-14

Abstract Background and Hypothesis Childhood adversity is associated with a myriad of psychiatric symptoms, including psychotic experiences (PEs), multiple psychological processes that may all mediate these associations. Study Design Using network approach, the present study examined complex interactions between childhood adversity, PEs, other mediators (ie, activity-related social stress, negative affect, loneliness, threat anticipation, maladaptive cognitive emotion regulation, attachment...

10.1093/schbul/sbad079 article EN Schizophrenia Bulletin 2023-06-15

Childhood adversity is known to predispose a wide array of psychopathology in adolescence and early adulthood. Identity development, being crucial developmental task during adolescence, has been suggested affect this association. Nonetheless, research on the role identity processes scarce. The current study aims investigate how exploration commitment may impact association between childhood psychopathology. We cross-sectionally investigated adversity, (i.e., breadth depth, making,...

10.1186/s12888-025-06649-y article EN cc-by-nc-nd BMC Psychiatry 2025-03-03

Abstract The COVID-19 pandemic is believed to have strongly impacted adolescents' mental health through limiting their day-to-day social lives. However, little known about the role of (social) risk/protective factors and adolescent health. Subclinical psychopathology, risk protective n = 173 adolescents (T1 mean age 16.0; 89% girls) were assessed prepandemic early-pandemic (T1: 2018/2019; T2: May 2020). Daily-life interactions in 6-day experience sampling periods. Correcting for age,...

10.1097/nmd.0000000000001826 article EN The Journal of Nervous and Mental Disease 2025-04-09

Multiple pathway models of ADHD suggest that multiple, separable biological pathways may lead to symptoms the disorder. If this is case, it should be possible identify subgroups children with based on distinct patterns brain activity. Previous studies have used latent class analysis (LCA) define at behavioral and cognitive level then test whether they differ neurobiological level. In proof concept study, we took a reverse approach. We applied LCA functional imaging data from two previously...

10.1016/j.nicl.2018.11.011 article EN cc-by-nc-nd NeuroImage Clinical 2018-11-17

Adolescence is a vulnerable period for psychopathology development, and certain parenting styles are consistent robust predictors of broad range mental health outcomes. The mechanisms through which maladaptive affect the development assumed to be largely social in nature. Yet, linking unexplored at arguably most important level functioning: daily life. This study aims identify associations between three styles, experience daily-life interactions. Furthermore, we aim explore extent these...

10.3389/fpsyt.2021.697127 article EN cc-by Frontiers in Psychiatry 2021-08-05

Childhood adversity is a major transdiagnostic risk factor for host of psychiatric disorders. Altered threat-related information processing has been put forward as potential process underlying the association between childhood and disorders, with previous research providing support decreased discrimination threat safety cues, in both children adults exposed to adversity. This altered threat-safety hypothesized stem from increased generalization fear, yet date, this hypothesis not tested...

10.31234/osf.io/bkz8a preprint EN 2024-04-15

Early findings on the impact of COVID-19 pandemic adolescents, suggest that – despite being at lowest physical health risk both their mental and day-to-day social lives are strongly affected. In this longitudinal study, we assessed changes in adolescent psychopathology symptoms, quality quantity daily-life interactions, relationship between interactions symptoms before during pandemic.A sample n=173 Flemish adolescents (mean age=16.0 latest measurement; 89% girls) from SIGMA cohort was...

10.31234/osf.io/5nfp2 preprint EN 2021-06-14

Purpose: The COVID-19 pandemic is assumed to have had a large impact on the mental health of adolescents. Finding out for which youth was largest imperative strengthening future crisis responses. In this study, we aimed assess different sociodemographic groups general population adolescents in Flanders, Belgium. Methods: Adolescents were tested SIGMA at W1 (n=1913; mean age=13.8; 63.1% female; 2018/2019); W2 (n=272; age=16.5; 74.0% 2020); and W3 (n=227; age=18.0; 78.4% 2022/2023)....

10.31234/osf.io/vmj96 preprint EN 2024-09-05

Abstract Background Research suggests that most mental health conditions have their onset in the critically social period of adolescence. Yet, we lack understanding potential processes underlying early psychopathological development. We propose a conceptual model where daily-life interactions and skills form an intermediate link between known risk protective factors (adverse childhood experiences, bullying, support, maladaptive parenting) psychopathology adolescents – is explored using...

10.1017/s0033291724001594 article EN cc-by Psychological Medicine 2024-10-01

Childhood adversity is associated with psychopathology. First evidence in adults suggests that threat anticipation, i.e., an enhanced anticipation of unpleasant events creating enduring sense threat, may be a putative mechanism linking childhood to This study aimed test the indirect effect on psychopathology via large community sample adolescents. We measured trauma and bullying victimization (as indicators adversity), general prodromal psychotic symptoms adolescents aged 12-16 years (full...

10.1007/s00787-022-02048-w article EN cc-by European Child & Adolescent Psychiatry 2022-07-29

Background: Previous research suggests attachment is a vulnerability factor for self-harm thoughts and behaviors in adults. Yet, few studies have investigated this relationship during adolescence, although adolescence critical period changes relationships onset. Whether how relates to as measured daily life also unknown. Aims: To investigate whether paternal, maternal, peer are associated with lifetime current adolescent behaviors. Additionally, examine different bonds interact relation...

10.1027/0227-5910/a000878 article EN cc-by Crisis 2022-11-02
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