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行動 vs. 不行動の後悔

12歳前に子供に個人のスマートフォンを与える vs. 思春期まで待つ

行動した場合

早くからスマートフォンを与える(12歳未満)

39%

行動しなかった場合

思春期(12歳以降)まで待ってから与える

3.0%

それぞれの選択を後で後悔した人の割合。バーと完全な記録は下に表示されます。


家族

最終確認 2026-05-13

証拠の質 4.0/5

8次元のレビュー評価。基準は 品質ルーブリック 。各次元は1〜5で評価。

D1 出典の検証
4/5
D2 出典の権威性と独立性
4/5
D3 後悔率の正確性
2/5
D4 出典の比較可能性
3/5
D5 ギロヴィッチ・パターン
5/5
D6 文章の質
5/5
D7 注意事項の完全性
5/5
D8 サンプルの質
4/5
平均 4.0/5
A child-sized backpack on a school bench beside a smartphone and a simple folded note
代替データ — この決断に関する直接的な後悔調査は存在しません。比率は後悔を直接尋ねる質問ではなく、満足度スコアとアクセス障壁のデータから導出されています。以下の注意事項を参照してください。

行動への後悔

早くからスマートフォンを与える(12歳未満)

39%

子にスマートフォンを与えた親の39%が与えなければよかったと希望

すでに子にスマートフォンを与えた、18歳未満の子を少なくとも一人持つ18歳以上の米国親、全国代表オンラインパネル

横断的、2025年2月

不作為への後悔

思春期(12歳以降)まで待ってから与える

3.0%

スマートフォン提供を遅らせた親の約3%が、もっと早く与えればよかったと希望(代替的上限)

12歳以降にスマートフォンを受け取った子の親;割合はHMD 2024調査とPew 2020態度データの二次特性評価から導出された保守的代替的上限 — 遅らせた親の直接的な後悔調査は存在しない

横断的、2024年7月;代替推定

この選択を後悔した割合

action dominates — 行動が優勢 — 多くは行動したことを後悔しています。

関連する決断

意味的に類似する決断 — 同じ領域、異なるトレードオフ。

family直接

子どものSNSアカウントへのアクセス

この選択を後悔した割合

行動が優勢

行動の後悔が5.4倍高い

family

助ける vs. 自力で乗り越えさせる

この選択を後悔した割合

行動が優勢

行動の後悔が1.2倍高い

family

私立 vs 公立

この選択を後悔した割合

不作為が優勢

不作為の後悔が3.2倍高い

family

若くして結婚 vs. 待つ

この選択を後悔した割合

行動が優勢

行動の後悔が1.5倍高い

family

性教育のタイミング

この選択を後悔した割合

不作為が優勢

不作為の後悔が3.5倍高い

family

家族の人数

この選択を後悔した割合

不作為が優勢

不作為の後悔が2.6倍高い

family

甘やかす vs. 自制する

この選択を後悔した割合

行動が優勢

行動の後悔が2.9倍高い

family

途中でやめさせる vs. 続けさせる

この選択を後悔した割合

不作為が優勢

不作為の後悔が2.3倍高い

39% of parents who gave their child a smartphone before adolescence wish they hadn’t, according to a Harris Poll of 1,013 US parents conducted in February 2025 — the largest directly comparable action-side measure available for this decision. The figure is higher for social media access: 54% of parents who allowed it express the same regret. A separate global survey by HMD and Perspectus Global (July 2024, n=10,092 across five countries) found 54% of smartphone-giving parents worldwide report regretting the decision, with excessive screen time (63%), difficulty removing the device (43%), and observed negative effects on the child (38%) as the top reasons. On the other side, the same Harris Poll found that just 1% of parents wish they had given their child social media and smartphones earlier — while nearly a quarter of smartphone-giving parents say, with hindsight, they gave the device too young. That 1% is the closest direct measure of regret about waiting, and it is consistent with Pew Research’s finding that 73% of US parents believe children should not have their own smartphone before age 12.

The Harris Poll figure carries an important framing caveat: the question asked whether parents wish they hadn’t given a phone “but felt they had to give in because so many of their children’s friends already had one.” This conflates retrospective regret with socially coerced compliance. Parents who gave a phone willingly and remain satisfied do not appear in the 39%, but neither do parents who regret the decision independently of peer pressure effects. The rate captures a specific subset — those experiencing regret-under-social-pressure — rather than all-cause regret. The true magnitude of unprompted parental regret about this decision is not known from existing surveys, though the HMD global figure (54%) using different question wording lands in the same order of magnitude.

What the data does not capture well is the distinction between regretting the device itself and regretting the access that came with it. Parents who gave a basic calling-only phone face different decisions than parents who gave full internet access, but surveys do not distinguish these categories. Sapien Labs’ Global Mind Project dataset (n=27,969, published May 2023) documents that mental wellbeing among 18-24-year-olds consistently improves with a later age of first smartphone or tablet ownership, with a steeper improvement for females than for males — though that is an outcome measure, not a parental-regret measure. Pew’s 2020 survey found that 73% of US parents already believed under-12 smartphone ownership was inappropriate before these outcome findings became widely publicized; the Harris Poll’s post-”Anxious Generation” 2025 data suggests that normative consensus on delayed provision has, if anything, strengthened.

出典: 行動

根拠台帳

以下の各数値は各出典が報告した内容であり、引用した原文の抜粋と算出方法を記載しています。リンクをクリックして直接確認できます。

2/3 件の出典が引用元と一字一句一致することを独立して検証済み

  1. [1] The Harris Poll — What Parents Think About Their Kids' Social Media and Smartphone Usage 検証済み
    What Parents Think About Their Kids' Social Media and Smartphone Usage

    See all 2 Likelier entries citing this source →

    統計値
    39% of parents who had already given their child a smartphone said they wish they hadn't but felt they had to give in because so many of their children's friends already had one; 54% of parents who had allowed social media access said the same
    抜粋
    “"39% of parents who had given their child a smartphone said they wish they hadn't but felt they had to give in because so many of their children's friends already had one. 54% of parents who had allowed access to social media said they wish they hadn't." ”
    出典データ
    2025-02-27
    アクセス日
    2026-05-13
    検証
    グラウンディング監査の際、抜粋を引用元から独立して再取得し、原文と一字一句一致することを確認しました。
    計算過程
    Harris Poll, conducted February 21–27, 2025. N=1,013 US parents aged 18+ with at least one child under 18, nationally representative online panel. The 39% is a direct retrospective regret question among parents who had already given their child a smartphone. The question wording conflates regret with social-pressure rationalization ("wish they hadn't but felt they had to give in") — the true uncoerced regret rate may differ in either direction. Survey was commissioned in collaboration with social psychologist Jonathan Haidt, who publicly advocates delaying smartphones for children; this is a commissioning-party consideration, though Harris Poll is an independent polling organization. This is the most methodologically defensible nationally representative US figure for action-side parental regret about early smartphone provision.
  2. [2] HMD / Perspectus Global — The Better Phone Project — Global Parental Survey
    The Better Phone Project — Global Parental Survey
    統計値
    54% of parents across five countries (UK, US, India, Germany, Australia) report regretting giving their child a smartphone; top reasons among regretters: excessive screen time (63%), difficulty removing the device (43%), observed negative effects (38%)
    抜粋
    “"More than half of parents (54%) globally who have given their child a smartphone regret doing so. Among those who regret it, the top reasons are excessive screen time (63%), it being hard to take away once given (43%), noticing negative effects on their child (38%), and personality changes (33%)." ”
    出典データ
    2024-07-01
    アクセス日
    2026-05-13
    計算過程
    HMD/Perspectus Global survey, July 2024. N=10,092 parents across UK, US, India, Germany, and Australia. HMD manufactures the "Better Phone Project" kids' handset — this survey directly supports their product premise and cannot be classified above news_article due to commercial conflict of interest. The 54% global figure is higher than Harris Poll's 39% US rate; the gap may reflect genuine cross- national variation, question-wording differences, or commercial framing effects. Included as corroborating evidence for scale of action-side regret; the primary rate uses Harris Poll.
  3. [3] Sapien Labs — Age of First Smartphone/Tablet and Mental Wellbeing Outcomes 検証済み
    Age of First Smartphone/Tablet and Mental Wellbeing Outcomes
    統計値
    Among 27,969 people aged 18-24 surveyed January-April 2023, mental wellbeing consistently improved with older age of first smartphone/tablet ownership, with a steeper improvement in females than males
    抜粋
    “"Mental wellbeing consistently improved with older age of first ownership of a smartphone or tablet, with a steeper change in females." ”
    出典データ
    2023-05-15
    アクセス日
    2026-07-03
    検証
    グラウンディング監査の際、抜粋を引用元から独立して再取得し、原文と一字一句一致することを確認しました。
    計算過程
    Sapien Labs Rapid Report, Global Mind Project MHQ data (n=27,969 18-24-year-olds, collected January-April 2023, published May 15, 2023). This is an outcome measure -- age of first device vs. adult mental wellbeing -- not a parental-regret measure. Included as context for why earlier smartphone provision draws more scrutiny, not as a source of either side's regret rate. The report has not undergone peer review in a journal, so it is classified as primary_study (Sapien Labs' own primary data collection) rather than peer_reviewed.

出典: 不作為

根拠台帳

以下の各数値は各出典が報告した内容であり、引用した原文の抜粋と算出方法を記載しています。リンクをクリックして直接確認できます。

1/2 件の出典が引用元と一字一句一致することを独立して検証済み

  1. [1] The Harris Poll — What Parents Think About Their Kids' Social Media and Smartphone Usage 検証済み
    What Parents Think About Their Kids' Social Media and Smartphone Usage

    See all 2 Likelier entries citing this source →

    統計値
    Just 1% of parents said they wish they had given their child social media and smartphones earlier; by contrast, almost a third of parents whose children have social media, and nearly a quarter whose children have smartphones, say with hindsight they gave these things too young
    抜粋
    “"Almost a third of parents whose children have access to social media, and nearly a quarter whose children have smartphones, say that with the benefit of hindsight, they gave them these things too young. By contrast, just 1% of parents said they wish they'd given their kids social media and smartphones earlier." ”
    出典データ
    2025-02-27
    アクセス日
    2026-07-01
    検証
    グラウンディング監査の際、抜粋を引用元から独立して再取得し、原文と一字一句一致することを確認しました。
    計算過程
    Harris Poll, conducted February 21–27, 2025. N=1,013 US parents aged 18+ with at least one child under 18, nationally representative online panel; same survey as the action-side source. The "just 1% wish they'd given their kids social media and smartphones earlier" figure is a direct retrospective measure of inaction-side regret (parents who wish they had NOT delayed) — the closest available direct measure of regret about waiting. The inaction-side proxy rate (0.03) is set at 3% as a conservative upper bound, modestly above the survey's 1%, to account for wording ("earlier" is directional, not an explicit regret question) and for parents who delayed but whose regret is unmeasured. Earlier versions of this entry misattributed the 1% figure to an HMD/Perspectus press release, which does not contain it; the figure originates with this Harris Poll.
  2. [2] Pew Research Center — Parenting Children in the Age of Screens
    Parenting Children in the Age of Screens

    See all 2 Likelier entries citing this source →

    統計値
    73% of US parents believe it is acceptable for a child to have their own smartphone only after age 12; just 22% think it is OK for a child under age 12 to have one
    抜粋
    “"A majority of parents (73%) believe it is acceptable for children to have their own phone only after they have reached at least the age of 12. Some 45% say smartphone ownership is acceptable between the ages of 12 and 14, and 28% say it is acceptable between the ages of 15 and 17. Just 22% think it is OK for a child under the age of 12 to have one." ”
    出典データ
    2020-07-28
    アクセス日
    2026-05-13
    計算過程
    Pew Research Center, March 2020. N=3,640 US parents with children under 12. The 73% figure is a prospective attitude about appropriate timing — not a retrospective regret question — but provides strong indirect evidence that regret about waiting is very rare: parents who hold the dominant view that under-12 smartphone ownership is inappropriate are unlikely to subsequently regret having acted on that view. Used as indirect supporting evidence for the low inaction- side proxy rate rather than as a direct regret measure.

注意事項

The action-side rate (0.39, Harris Poll Feb 2025, n=1,013 US parents) is the strongest available figure for this decision, but carries an important framing caveat: the survey question conflates genuine regret with social-pressure rationalization by asking whether parents "wish they hadn't but felt they had to give in because so many of their children's friends already had one." This construction measures regret under perceived social coercion, not uncoerced retrospective regret. Parents who gave a phone willingly and are satisfied would not appear in this rate; parents who regret the decision for reasons unrelated to peer pressure also appear. The true isolated regret rate may be higher or lower. The HMD global figure (54%, n=10,092) is consistent in direction but lower quality due to commercial conflict of interest. Neither survey distinguishes regret about device timing specifically from regret about the volume of use that followed. The inaction-side rate (0.03) is a proxy upper bound, not a dedicated survey of delaying parents. No survey directly asked parents who withheld a smartphone until adolescence whether they regret the delay. The closest direct measure is the Harris Poll (Feb 2025) finding that just 1% of parents wish they had given their child social media and smartphones earlier — the mirror image of inaction-side regret. The 3% upper bound is set modestly above that 1% to account for the fact that "earlier" is a directional attitude rather than an explicit regret question, and for delaying parents whose regret goes unmeasured; the true rate may be closer to 1% or lower. The Pew Research data (73% of parents saying under-12 smartphone ownership is inappropriate) provides additional indirect evidence that inaction regret is rare, because the delaying parents largely acted in accordance with the dominant parental norm. A critical population distinction: these surveys measure parental regret about giving a smartphone, not parental regret about giving a phone-without- internet-access (a category that did not exist at survey time but is now commercially available). A parent who gave a basic phone with calling/texting only would not be captured by these questions, and their regret profile may differ substantially. The Pew 2020 data (now five years old) predates widespread awareness of smartphone-related adolescent mental health research that became prominent after Haidt's "The Anxious Generation" (2024); current parental norms may have shifted further toward delayed provision. The 12:1 ratio implied by 39% vs. 3% should be read as directionally robust — giving early generates far more regret than waiting — but the specific magnitude is weakly grounded given the proxy status of the inaction side. The 2024 and 2025 surveys share a cultural moment dominated by post-pandemic smartphone awareness; longitudinal data on whether parental regret about early provision persists or fades as children age does not yet exist.

生データ: /api/decisions.json

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