Cited by 133Impact of Technology on AdolescentsChild Development and Digital TechnologyDigital Media and Philosophy

The DOI matches its Crossref record; 46 of the 47 references it cites were found in a registry or an index; 1 of the 59 sources its claims cite were checked for support.

The effects of smartphones on well-being: theoretical integration and research agenda

Kushlev, Kostadin, Leitao, Matthew R·2020·Current Opinion in Psychology

Abstract

As smartphones become ever more integrated in people's lives, a burgeoning new area of research has emerged on their well-being effects. We propose that disparate strands of research and apparently contradictory findings can be integrated under three basic hypotheses, positing that smartphones influence well-being by (1) replacing other activities (displacement hypothesis), (2) interfering with concurrent activities (interference hypothesis), and (3) affording access to information and activities that would otherwise be unavailable (complementarity hypothesis). Using this framework, we highlight methodological issues and go beyond net effects to examine how and when phones boost versus hurt well-being. We examine both psychological and contextual mediators and moderators of the effects, thus outlining an agenda for future research.

Overview

AI snapshot

Written from the paper’s full text.

TL;DR

The paper proposes a displacement–interference–complementarity (D.I.C.) framework to integrate contradictory findings on how smartphones affect well-being, arguing that phones can both hurt and boost well-being depending on when and how they are used. It concludes that net effects are typically small to negligible but can become substantial with heavy, problematic use, and it calls for experimental and objective-measurement research.

Key findings

  • Screen time predicts slightly lower well-being across large representative adolescent samples, but the net negative effect is small and non-linear: some screen time is better than none, while heavy use is worse. One cited study found screen media use accounted for only 0.4% of variance in well-being; another found adolescents spending 5+ hours/day on digital screens were twice as likely as light users to have attempted suicide.
  • Self-reported phone use is imprecise and biased: subjective estimates of average screen time share as little as 10% variance with objective measures; light users tend to overestimate and heavy users underestimate. Frequency and time of phone use are distinct, sharing only about 10%–15% variance; people check phones about 50 times/day, usually just over a minute at a time, with only 5% of instances lasting longer than 10 minutes.
  • Interference effects are supported by a 14-day field experiment in which batching notifications three times daily made users happier and less stressed, mediated by improved subjective quality of attention. Mere-presence effects on social connection remain uncertain: one small study found effects for meaningful but not casual topics, but a replication failed, and both studies were likely underpowered (Ns < 100).
  • Complementarity effects show phones can boost well-being when they afford otherwise unavailable information, communication, or comfort—for example, after social exclusion, phone access reduced salivary alpha-amylase reactivity in a 148-participant experiment, and phone use provided comfort in stressful situations.

Methods

  • Design: theoretical integration and research agenda, not a new empirical study; the authors synthesize disparate findings into three hypotheses—displacement, interference, and complementarity—and present a D.I.C. framework in Table 1.
  • Data: review focuses on research published since 2018, drawing on earlier work when needed; cited evidence includes large representative adolescent samples, experience-sampling and objective usage-tracking studies, field experiments, and lab experiments.
  • Analysis: conceptual review and framework development, specifying primary predictors, mediators/mechanisms, and moderators/interactions for each hypothesis; no formal meta-analysis or new data collection is reported.

Limitations

  • Stated: correlational findings need experimental tests for causal conclusions; measurement must distinguish screen time, frequency of use, notifications, and mere presence, and move beyond imprecise, biased self-reports to objective measures obtained over multiple days via mobile sensing.
  • Stated: research needs to focus more on when multifunctional devices are beneficial versus detrimental; the authors describe their conclusions as “(very) preliminary,” and note that mere-presence studies were likely underpowered (Ns < 100).
  • Evident: as a review and agenda-setting article, it does not provide new empirical tests of the D.I.C. framework, and its integration relies on selected findings rather than a systematic meta-analytic synthesis.

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Integrity signals

Registry

Crossref · 10.1016/j.copsyc.2020.05.001

Cites

46 of 46 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Verification

Claims the paper makes

32 Not checked yet · 23 Own interpretation · 1 Partly supported · accuracy not yet measured

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Show all 35 claims

  • Probably not a substantial claim. 10
  • It may state two separate claims as one. 12
21 of 21
  • The authors state this as an assumption.

    The net effects of phones on well-being at any given time depend on the well-being people gain by using their phones minus the well-being they would have gained had they not used their phones.

    “The displacement and interference hypotheses both assume that the net effects of phones on well-being, at any given time, will depend on the well-being people gain by using their phones, minus the well-being that people would have gained had they not used their phones.”
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Citations

Cites

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Research works printed but not linked: 1

  1. Simonsohn, 2014, 5, e142559

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Metadata

Authors
Kushlev, K., & Leitao, M. R.
Affiliations
Georgetown University (US)
Corresponding author
Kushlev, Kostadin
Venue
Current Opinion in Psychology
Publisher
Elsevier BV
Published
2020-12
Volume
36
Pages
77-82
ISSN
2352-250X (ISSN-L)
OpenAlex
W3027003509
Cited by
129
References
47
Citations by year
2026: 36 · 2025: 18 · 2024: 20 · 2023: 24 · 2022: 16 · 2021: 13 · 2020: 2
FWCI
2.40
Type
journal article
Language
en
Open access
closed
Locations
  • Current Opinion in Psychology (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Topics
  • Social Sciences › Sociology and Political Science › Impact of Technology on Adolescents
  • Social Sciences › Education › Child Development and Digital Technology
  • Social Sciences › Communication › Digital Media and Philosophy
Keywords
smartphones, well-being, displacement theory, interference hypothesis, complementarity hypothesis, psychological mediators, contextual moderators
MeSH terms
Smartphone, Humans

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