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Physical aggression toward parents from ages 11 to 24: prevalence trajectory and risk and protective factors - European Child & Adolescent Psychiatry Physical youth-to-parent aggression (PYPA) is among the most understudied forms of family aggression in the general population. This study examined the prevalence and developmental course of PYPA from...

A new #zproso paper led by @laurabech.bsky.social examines youth-to-parent physical aggression (PYPA) and childhood behavioral and interpersonal risk and protective factors. Findings include a cumulative prevalence of 32.5% (across ages 11-24), with a peak at age 13.

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How do substance and polysubstance use trajectories differ by sexual attraction from ages 17 to 24? A community-based longitudinal cohort study in Switzerland Introduction Longitudinal, population-based studies of how youth substance use (SU) varies by sexual attraction, sex and their interaction remain scarce, especially in Europe. This study examines poly...

We are excited to share this recent #zproso paper by Clarissa Janousch, which concludes that substance use prevention efforts should be strategically timed and tailored to the unique escalation patterns observed among sexual minority youth.
bmjpublichealth.bmj.com/content/4/1/...

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Redirecting

Using ecological momentary assessment data from the #zproso add-on study D2M, research led by Aja Murray tests how social media use relates to negative emotion and depression: use and negative affect co-occur, but do not predict each other. Moreover, social media inertia is linked to depression.

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A new study using #zproso data led by Aja Murray tests the link between reading frequency and adolescent mental health. Using counterfactual and random-intercept cross-lagged panel models, results show no association, indicating reading frequency isn’t a protective factor without further context.

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A Fine-Grained Longitudinal Study of Adolescent Cannabis Use and Its Relation to Cognitive Performance in Young Adulthood - International Journal of Mental Health and Addiction Cannabis use in adolescence has been linked to lower adult cognitive function, but the specific contributions of age of onset and usage frequency remain unclear. This study analyzed data from the Zuri...

A new #zproso paper led by Clarissa Janousch examines how adolescent cannabis use relates to cognitive performance in young adulthood: cannabis use is linked to reduced attention and declarative memory at age 24, whereas it is not associated with spatial working memory.

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Sanctions Against Juvenile Offenders: Do Stronger Offences Result in Harsher Penalties?

Using criminal justice data from the #zproso study, new research led by Gian Ege examines how offences shape prosecutorial decisions in Swiss juvenile justice: while individual factors influence who faces legal proceedings and how often, sanction severity is driven by offence type and recidivism.

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Redirecting

A new #zproso paper by Marta Codina and colleagues found that adolescents with learning disabilities reported more suicidal ideation and self-injury, and lower levels of protective factors, highlighting the need for early identification and tailored prevention strategies.

👉 doi.org/10.1016/j.ja...

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The 7th #zproso International Research Network (zIReN) Meeting in Cambridge welcomed researchers from nine universities. New papers using #zproso data were presented, examining human development from different perspectives. The event brought researchers closer and fostered new collaborations.

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Cannabis use is associated with changes in psychological and functional well-being during young adulthood: evidence from self-reports and hair analyses | Psychological Medicine | Cambridge Core Cannabis use is associated with changes in psychological and functional well-being during young adulthood: evidence from self-reports and hair analyses - Volume 55

Few studies have yet explored how cannabis use influences changes in psychopathology and functional well-being in young adults. Using #zproso data, a new study led by @lydiafjf.bsky.social examines this matter through self-reports and hair THC analyses to track changes from age 20 to 24.
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Wissenschaftliche Mitarbeit und Co-Fieldwork Management (60-100%, nach Vereinbarung), befristet bis September 2026, verlängerbar bis mind. Ende 2028

We are looking for a German-speaking research associate and co-fieldwork manager (60–100%) with a background in the social sciences for the @z-proso.bsky.social project!

#zproso has been investigating the life course development of violence, delinquency and mental health since 2004.

Link👇

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Childhood Risk Factors for Violent Ideations in Late Adolescence and Early Adulthood Background Violent ideations (VIs) refer to thoughts, daydreams or fantasies of killing, inflicting serious physical harm or humiliating another person. Violent ideations are of particular interest ...

A new #zproso paper led by Manuel Eisner examines trajectories and childhood predictors of violent ideations (VIs) up to age 24. Findings indicate a strong decline in VIs from late adolescence to early adulthood. They also suggest that childhood predictors of later VIs differ by sex.

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Attitudes towards violence against women among second-generation refugee, migrant and native Swiss adolescents in Zurich, Switzerland - Lana Ghuneim, Manuel Eisner, Denis Ribeaud, 2025 Research on violence against women (VAW) attitudes among adolescent migrant communities is limited. This study examines VAW attitudes in second-generation refug...

How do attitudes towards violence against women (VAW) differ among second-generation refugees, migrants, and native Swiss adolescents, and what factors are associated with higher support for VAW? A new paper led by Lana Ghuneim, using #zproso data, examines this issue.
👉 doi.org/10.1177/1477...

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No evidence for an association of testosterone and cortisol hair concentrations with social decision-making in a large cohort of young adults Abstract. Prior research has established that testosterone is an important modulator of social decision-making. However, evidence on the relationship betwe

A new study led by @clamassaccesi.bsky.social, using #zproso data, found no evidence that hair testosterone and cortisol levels are linked to social decision-making in young adults. This paper challenges prior theories about hormonal influences on social behavior.

👉 doi.org/10.1093/scan...

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The Journal of Early Adolescence - Volume 45, Number 1, Jan 01, 2025 Table of contents for The Journal of Early Adolescence, 45, 1, Jan 01, 2025

Explore the new Journal of Early Adolescence special issue: Featuring five articles from the #zproso International Research Network #zIReN, it examines the role of early adolescence in subsequent risk and resilience.
🔗Full special issue: journals.sagepub.com/toc/JEA/curr...

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Excited to announce z-proso is now also on #Bluesky! 🦋
Follow us under @z-proso.bsky.social for insights and updates on new research findings based on #zproso data.

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