Frequent and longer screen-based media use, including Internet-related addictive behaviors, is related to a less efficient cognitive control system in adolescence¶
Claim · All claims
Evidence · 1 study · reviewr2·q2
Currency · newest study 2021 · checked against its sources 2026-10-20 (automated, 1 of 1 entry) · not reviewed by a person
Subclaims¶
Reading the evidence codes
q is the design tier, i the impact, n the sample, and the kind with its r
the rigour judged within that kind: what each code means.
This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.
q2 i? Across the 16 neuroimaging studies reviewed, frequent and longer duration of screen-based media use, including Internet-related addictive behaviors, is related to reduced development of top-down cognitive control in adolescence. → Marciano Laura 2021
Evidence¶
Marciano Laura 2021¶
Marciano Laura, Camerini Anne-Linda, Morese Rosalba. (2021). The Developing Brain in the Digital Era: A Scoping Review of Structural and Functional Correlates of Screen Time in Adolescence. Frontiers in Psychology. https://doi.org/10.3389/fpsyg.2021.671817
q2 · i? · review · r2
A scoping review synthesizing 16 task-unrelated and task-related neuroimaging studies published 2010-2020 reports this as its first key message, stating that screen time and Internet addiction "is related to a less efficient cognitive control system in adolescence." No pooled effect size is printed.
"The first key message of this review is that frequent and longer duration of screen-based media use (including Internet-related addictive behaviors) is related to a less efficient cognitive control system in adolescence."
Discussion¶
Related Claims¶
- Excessive smartphone use in adolescents is associated with reduced frontostriatal connectivity and greater cortisol-related withdrawal symptoms
- Adolescents with Internet addiction show structural and resting-state functional brain alterations, including reduced gray matter density, reduced white matter FA, and decreased connectivity in DMN and CEN
- Frequency of Internet use negatively predicts longitudinal change in gray and white matter volumes and in verbal IQ in early adolescents
- Internet-addicted adolescents show deficient response inhibition, failing to recruit the frontal-basal ganglia pathway engaged by controls — a narrower finding that bears on this claim
- Teens with ASD are described as vulnerable to compulsive internet use that limits in-person social interaction — related
- Screen time is not significantly associated with white matter microstructure (FA, MD) in 10-year-olds, while sports participation is positively associated with FA — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
screen-time-less-efficient-cognitive-control-adolescence |
title |
Frequent and longer screen-based media use, including Internet-related addictive behaviors, is related to a less efficient cognitive control system in adolescence |
description |
Frequent and longer screen-based media use, including Internet-related addictive behaviors, is related to a less efficient cognitive control system in adolescence |
status |
review |
evidence_strength |
weak |
newest_evidence |
2021 |
source_checked |
2026-10-20 |
generated |
by process:wiki-ingest on 2026-10-16 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — marciano-laura-2021 |
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