# Clarifying the relations among youth technology use, substance use and mental health.

> **NIH NIH R21** · DARTMOUTH COLLEGE · 2022 · $246,000

## Abstract

PROJECT SUMMARY: From 2009 to 2019, depression and suicidality increased nearly 40% among US high
school students. However, during the same period, adolescent use of most substances (e.g., alcohol,
prescription drugs, inhalants, ecstasy, cocaine, and several more) decreased by 20-40%. Similar trends are
being reported in almost all industrialized Western European and Australasian countries. Importantly,
substance use and mental health problems remain strongly and positively correlated with each other –
suggesting that other factors must be driving these diverging youth trends. Digital technologies are a potential
explanation because they have significantly altered youths' environment and can impact youths' behavior,
health, and functioning. However, the relations among youth technology use, substance use, and mental
health are unclear due to the field's overreliance on cross-sectional data and inaccurate measures of
technology use (e.g., measuring general “screen time” rather than measuring when, where, and for how long
youth use specific devices or platforms). Furthermore, associations between technology use and substance
use or mental health are likely connected to a multitude of other biopsychosocial factors (e.g., biological sex,
peer and parental behaviors) that must also be considered. This exploratory study will produce a new,
empirically-derived model of adolescent digital technology use, substance use, and mental health by
capitalizing on the unique combination of comprehensive, gold-standard assessments available Adolescent
Brain Cognitive Development (ABCD) study (n=11,875). Analyses will be conducted using longitudinal data on
youth followed from ages 9/10 to 14/15. In AIM 1, we will use Group-based multi-trajectory modeling to identify
an optimal model of developmental subgroups of longitudinal technology use patterns. In AIM 2, we will
determine if Aim 1 technology subgroups differ in their relation to longitudinal patterns of substance use and
mental health problems. In AIM 3, we will test the robustness of the associations observed in the Aim 2 model
by examining the statistical impact of including five domains of biopsychosocial covariates in the model: (1)
Biological Sex, (2) Parents (e.g., monitoring of child's activities), (3) Peers (e.g., peer substance use), (4)
Environment/Context (e.g., family income) (5) Comorbidity of mental health and substance use. The resulting
model will quantify the magnitude and direction of interrelations among key variables and identify the
environmental conditions that meaningfully alter probabilities of adolescent outcomes. Achieving these aims
would be significant because it will re-orient the field in two ways: (1) address methodological bottlenecks
(e.g., assess different technology types, use longitudinal rather than cross-sectional data) and (2) identify core
etiological cascades of effects which the field can use to advance the content and timing of new screening and
prevention programs.

## Key facts

- **NIH application ID:** 10581790
- **Project number:** 1R21DA057535-01
- **Recipient organization:** DARTMOUTH COLLEGE
- **Principal Investigator:** Jacob T Borodovsky
- **Activity code:** R21 (R01, R21, SBIR, etc.)
- **Funding institute:** NIH
- **Fiscal year:** 2022
- **Award amount:** $246,000
- **Award type:** 1
- **Project period:** 2022-09-15 → 2024-08-31

## Primary source

NIH RePORTER: https://reporter.nih.gov/project-details/10581790

## Citation

> US National Institutes of Health, RePORTER application 10581790, Clarifying the relations among youth technology use, substance use and mental health. (1R21DA057535-01). Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/grant/nih/10581790. Licensed CC0.

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