(In)accuracy and convergent validity of daily end-of-day and single-time self-reported estimations of

Computers in Human Behavior · 2024 · Unclear · Moderate evidence

← Research stream

UnclearModerate evidencePaper 125

Study snapshot

PublicationComputers in Human Behavior · 2024

Study typeother

Reported directionUnclear

Evidence ratingModerate

Abstract

(In)accuracy and convergent validity of daily end-of-day and single-time self-reported estimations of smartphone use among adolescents Tkaczyk M, Tancoš M, Smahel D, Elavsky S, Plhák J. (In)accuracy and convergent validity of daily end-of- day and single-time self-reported estimations of smartphone use among adolescents. Computers in Human Behavior. Vol. 158, 2024, doi: 10.1016/j.chb.2024.108281. Abstract Understanding the measurement inaccuracy and bias introduced by self-reports of smartphone use is essential for making meaningful inferences about smartphone use and its effects. Evidence for the self- reports of smartphone use in intensive longitudinal studies is largely missing. Based on self-reported and digital trace data from 137 Czech adolescents (41% girls, Mage = 14.95 years), this study examined the accuracy, directional bias, and convergent validity of daily end-of-day and single-time reports of screen time and phone-checking behavior. Overall, the study found considerable discrepancies between self- reported smartphone use and digital trace and low between-person convergent validity for all self- reports considered for the study. Respondents usually reported shorter screen time and lower frequency of phone-checking behavior as compared to digital trace, both in daily and single-time self- reports. The within-person convergent validity between daily reports and digital tracking was low, indicating poor self-reports ability to capture the actual day-to-day fluctuations in smartphone use. This study adds to the existing evidence showing that self-reports based insights into how people use smartphones differ considerably from digital trace data and shows that both person and situational levels contribute to explaining the discrepancy between digital trace and self-report data among adolescents. Open access paper: sciencedirect.com

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeother

Effect directionunclear

PopulationCzech adolescents

Sample size137

ExposureNot supplied

Evidence strengthModerateConfidence: 74% · Peer reviewed: unknown

Main findings

In 137 Czech adolescents, self-reported daily end-of-day and single-time estimates of screen time and phone-checking showed considerable discrepancies compared with digital trace data and low between-person convergent validity. Participants generally underreported screen time and phone-checking frequency relative to digital trace, and within-person convergent validity for daily reports was low, indicating poor capture of day-to-day fluctuations.

Outcomes measured

Accuracy of self-reported smartphone use vs digital trace data
Directional bias in self-reported screen time
Directional bias in self-reported phone-checking frequency
Between-person convergent validity of self-reports vs digital trace
Within-person convergent validity of daily reports vs digital tracking (day-to-day fluctuations)

View raw extracted JSON

{
  "study_type": "other",
  "exposure": {
    "band": null,
    "source": "smartphone",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Czech adolescents",
  "sample_size": 137,
  "outcomes": [
    "Accuracy of self-reported smartphone use vs digital trace data",
    "Directional bias in self-reported screen time",
    "Directional bias in self-reported phone-checking frequency",
    "Between-person convergent validity of self-reports vs digital trace",
    "Within-person convergent validity of daily reports vs digital tracking (day-to-day fluctuations)"
  ],
  "main_findings": "In 137 Czech adolescents, self-reported daily end-of-day and single-time estimates of screen time and phone-checking showed considerable discrepancies compared with digital trace data and low between-person convergent validity. Participants generally underreported screen time and phone-checking frequency relative to digital trace, and within-person convergent validity for daily reports was low, indicating poor capture of day-to-day fluctuations.",
  "effect_direction": "unclear",
  "limitations": [],
  "evidence_strength": "moderate",
  "confidence": 0.74,
  "peer_reviewed_likely": "unknown",
  "keywords": [
    "smartphone use",
    "self-report",
    "digital trace data",
    "screen time",
    "phone checking",
    "adolescents",
    "measurement accuracy",
    "convergent validity",
    "intensive longitudinal studies"
  ],
  "suggested_hubs": []
}

AI can be wrong. Always verify against the paper.

AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1016/j.chb.2024.108281
PubMed: Not supplied

Read the original paper →

Related papers

← Back to the Research Library