{
  "schema": "vedokrok.public-item.v1",
  "release_id": "MHC-RPUB-20260920-75ad787a",
  "url": "/knowledge/measure-attention-and-well-being-not-only-screen-time-minutes",
  "id": "MHC-D-RESEARCH-0884",
  "version": "0.1.0",
  "title": "Measure attention and well-being, not only screen-time minutes",
  "summary": "A lower number is useful only if the life it creates is better.",
  "kind": "template",
  "body": "The 2025 trial measured sustained attention, subjective well-being and mental-health outcomes in addition to usage. When changing phone access, choose outcomes tied to the actual reason for the experiment: uninterrupted work, presence with family, sleep timing, mood or time for movement. Screen time is an exposure metric, not the final purpose.",
  "limits": [
    "Mental-health symptoms require appropriate care; a phone experiment is not treatment."
  ],
  "topics": [
    "union-digital-home-office-environment"
  ],
  "intents": [],
  "source_ids": [
    "RS-754613206B7D5210"
  ],
  "evidence": [
    {
      "claim": "The mobile-internet RCT evaluated objective sustained attention and well-being outcomes rather than relying only on usage time.",
      "source_id": "RS-754613206B7D5210",
      "role": "supports",
      "note": "Mental-health symptoms require appropriate care; a phone experiment is not treatment.",
      "locator": "See source record"
    }
  ],
  "use_when": [
    "A digital-boundary experiment is evaluated only by whether total screen time falls."
  ],
  "avoid_when": [
    "Mental-health symptoms require appropriate care; a phone experiment is not treatment."
  ],
  "example": "Track whether focused work blocks increase and bedtime scrolling falls, not only whether weekly screen time is 40 minutes lower.",
  "check": "The experiment can fail or succeed based on a meaningful outcome even if raw screen time changes modestly.",
  "template": "Exposure metric: [phone/internet use]. Primary life outcome: [outcome]. Simple measure: [measure]. Guardrail: [missed need].",
  "sources": [
    {
      "id": "RS-754613206B7D5210",
      "title": "Blocking mobile internet on smartphones improves sustained attention, mental health, and subjective well-being",
      "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC11834938/"
    }
  ],
  "relations": [],
  "collections": [
    {
      "id": "RC-112961CC8EF10888",
      "title": "Make the environment carry more of the focus load",
      "url": "/collections/make-the-environment-carry-more-of-the-focus-load"
    }
  ]
}