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行動 vs. 不行動の後悔

重要な個人的決断の前に人工知能に相談するか、相談せずに決めるか

行動した場合

決断前に人工知能に相談する

22%

行動しなかった場合

人工知能の助言なしに決断する

28%

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。


ライフスタイル

最終確認 2026-05-11

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
5/5
D3 後悔率の正確性
2/5
D4 出典の比較可能性
2/5
D5 ギロヴィッチ・パターン
4/5
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
5/5
平均 4.0/5
A person's notes beside a glowing chat window, contrasted with a blank notebook and a pen.
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

決断前に人工知能に相談する

22%

重要な決定のために AI に相談した人の約22%が有害または問題のある結果を報告(プロキシ; 11%が安全でない健康推奨を受けた; 制御された研究で AI 医療応答の21-49%が問題ありと評価)

健康、財務、または人生の決定のために AI チャットボットに相談した米国の成人

2025年10月-12月

不作為への後悔

人工知能の助言なしに決断する

28%

AI 相談を省略した人の約28%が、決定を改善できたかもしれない有用な情報を見逃した可能性がある(プロキシ; AI 健康ユーザーの46-59%が具体的な利益を報告; 財務 AI ユーザーの66-90%が価値があると見出した)

AI に相談せずに重要な決定をした米国の成人

2025-2026年

この選択を後悔した割合

balanced — ほぼ均衡 — どちらの選択も同程度の後悔を伴います。

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。

career

AIによる学業課題

この選択を後悔した割合

均衡

ほぼ均衡

lifestyle

タトゥー

この選択を後悔した割合

行動が優勢

行動の後悔が1.6倍高い

健康

セラピーあり・なし

この選択を後悔した割合

均衡

ほぼ均衡

健康

ボディピアス

この選択を後悔した割合

行動が優勢

行動の後悔が4.0倍高い

lifestyle

菜食主義

この選択を後悔した割合

行動が優勢

行動の後悔が3.8倍高い

lifestyle

都市 vs 郊外

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

lifestyle

変化を受け入れる

この選択を後悔した割合

不作為が優勢

不作為の後悔が3.3倍高い

健康

豊胸手術

この選択を後悔した割合

均衡

ほぼ均衡

About 1 in 4 US adults has now consulted AI for health information or advice, according to a West Health/Gallup panel of 5,660 adults surveyed in late 2025. Among those users, 46% felt more confident asking their providers questions afterward, and 59% used AI to prepare before a doctor visit — concrete stated benefits that non-users forgo. But the same survey found that 11% of AI health users reported receiving unsafe recommendations, and a parallel UCLA/BMJ Open study rating 250 AI responses to medical questions found 49.6% were problematic to some degree — mostly delivered with confidence and few caveats, making them difficult for users to identify as unreliable. An MIT Media Lab study published in NEJM AI documented that participants systematically overestimated AI medical reliability and could not distinguish AI-generated from physician responses, even when the AI response was inaccurate.

The regret arithmetic here is genuinely ambiguous, which is unusual in this dataset. The action-side risk (22% proxy, bounded by 11% unsafe-recommendation rate and 49.6% problematic-response rate) and the inaction-side opportunity cost (28% proxy, based on AI users’ reported benefits) are close enough that the entry is classified as ‘mixed’ rather than clearly inaction-dominates. How AI is used matters more than whether it is used: supplementing a scheduled doctor visit with AI research before attending is a different action category than using AI as a triage replacement for a symptom that warrants evaluation. The former has low action-risk and meaningful information benefit; the latter has higher action-risk and may cause harmful delay. The 14 million Americans who skipped a provider visit based on AI advice represent the higher-risk end of the use spectrum, though some of those skipped visits may have been genuinely unnecessary.

The honest summary of this entry’s evidentiary state: the AI consultation decision is too domain-specific, use-case-dependent, and rapidly evolving to generate a stable regret-pair estimate. Financial AI consultation self-reports are overwhelmingly positive (Wells Fargo: ~90% found results worthwhile), which would pull the inaction-regret figure up substantially if the financial domain were weighted equally with health. Medical AI consultation carries real documented risk of inaccurate confident advice in a domain where acting on wrong information has direct health consequences. The mixed classification reflects both the genuine uncertainty and the heterogeneity of “consulting AI” as a decision — something between a research tool and an advisor, with properties of each and the disclaimers of neither.

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] West Health / Gallup — Millions of Americans Now Consult AI Before, After, and Sometimes Instead of Seeing a Doctor 検証済み
    Millions of Americans Now Consult AI Before, After, and Sometimes Instead of Seeing a Doctor
    統計値
    About 1 in 4 US adults (over 66 million) report having used AI tools or chatbots for health information or advice; 11% of US adults who used AI for health information reported receiving unsafe recommendations; 14% (~14 million) skipped a provider visit based on AI advice
    抜粋
    “"One in four U.S. adults — the equivalent of over 66 million Americans — report having used artificial intelligence tools or chatbots for physical or mental healthcare information or advice. ... 11% of AI health users reported receiving unsafe health recommendations from AI. 14% of recent AI health users skipped a provider visit based on AI advice. 46% felt more confident asking providers questions after using AI." ”
    出典データ
    2026-01-01
    アクセス日
    2026-05-11
    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
    West Health / Gallup panel survey of n=5,660 US adults, fielded October–December 2025, margin of error ±2.1pp. This is the most methodologically rigorous large-sample US survey on AI health consultation outcomes. The "one in four US adults (over 66 million)" overall-prevalence figure grounds the entry's opening body sentence, which previously cited this survey for that figure without a matching excerpt/statistic. The 11% unsafe-recommendation rate is the primary action-regret proxy: it represents the share of users who received advice that was later identified as unsafe, which is a necessary precursor to regret even if regret is not directly measured. The 14% who skipped a provider visit based on AI advice is a behavioral-consequence measure; it does not directly map to regret (some may have correctly assessed that no visit was needed). The 22% action-regret estimate is bounded by the 11% unsafe-recommendation rate (lower bound) and the broader 21–49% problematic-response rates from academic accuracy studies (upper bound), centered at approximately 22% to reflect that problematic responses do not always produce regrettable outcomes.
  2. [2] CIDRAP (University of Minnesota) reporting on UCLA / BMJ Open study — AI Chatbots Provide Poor Answers to Medical Questions Half the Time 検証済み
    AI Chatbots Provide Poor Answers to Medical Questions Half the Time
    統計値
    49.6% of AI responses to medical questions were rated as problematic in a blinded evaluation of 5 major chatbots (30% somewhat, 19.6% highly problematic)
    抜粋
    “"49.6% of AI chatbot responses to medical questions were rated as problematic — 30% 'somewhat problematic' and 19.6% 'highly problematic.' Chatbot responses were consistently given with confidence and certainty, with few caveats or disclaimers." ”
    出典データ
    2025-02-01
    アクセス日
    2026-05-11
    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
    UCLA / BMJ Open study of 250 total questions across 5 major chatbots (ChatGPT, Gemini, DeepSeek, Meta AI, Grok), 10 questions each across 5 medical categories, data collected February 2025, published 2026. The 49.6% problematic-response rate establishes the upper bound of action-side risk for health-domain AI consultation. The key finding about confident framing with few caveats is the mechanism that converts problematic responses into potential harm: users cannot easily identify which responses are in the unreliable half. Used here to anchor the upper bound of the 22% action-regret estimate; the lower bound is the West Health/Gallup 11% unsafe-recommendation rate from real-world self-report.
  3. [3] NEJM AI (Shekar, Pataranutaporn, Sarabu, Cecchi & Maes) / MIT Media Lab — People Overtrust AI-Generated Medical Advice despite Low Accuracy
    People Overtrust AI-Generated Medical Advice despite Low Accuracy
    統計値
    Across 300 participants, people were unable to distinguish AI-generated from doctors' responses, rated high-accuracy AI responses as more valid/trustworthy/complete, gave low-accuracy AI responses ratings similar to doctors', and showed a high tendency to follow potentially harmful AI advice
    抜粋
    “"Participants were unable to effectively distinguish between AI-generated responses and doctors' responses [and] rated high-accuracy AI responses as significantly more valid, trustworthy, and complete than the other two types of responses. Low-accuracy AI responses tended to receive ratings similar to those given to doctors' responses [and participants showed] a high tendency to follow the potentially harmful medical advice contained in those responses." ”
    出典データ
    2025-05-13
    アクセス日
    2026-05-11
    計算過程
    NEJM AI / MIT Media Lab study on AI medical response evaluation. The overtrust finding is the mechanism explanation: users systematically overestimate AI reliability in the medical domain, meaning the problematic-response rates from accuracy studies translate into real-world harm more readily than they would if users could identify unreliable responses. This supports using the problematic-response rate (not just the unsafe- recommendation rate) as the relevant risk bound.

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. [1] West Health / Gallup — Millions of Americans Now Consult AI Before, After, and Sometimes Instead of Seeing a Doctor
    Millions of Americans Now Consult AI Before, After, and Sometimes Instead of Seeing a Doctor
    統計値
    46% of AI health users felt more confident asking providers questions afterward; 59% used AI to research before a doctor visit
    抜粋
    “"46% of AI health users felt more confident asking providers questions after using AI. 59% used AI to research before a doctor visit. 71% were motivated by wanting answers quickly; 71% wanted additional information." ”
    出典データ
    2026-01-01
    アクセス日
    2026-05-11
    計算過程
    West Health / Gallup panel, n=5,660, October–December 2025. The 46% who felt more confident asking providers questions is a concrete stated benefit of AI consultation — a benefit that non-users forgo. The 28% inaction-regret proxy is derived conservatively from the proportion of AI users who report concrete preparation or information benefits (46–59%), adjusted downward to reflect that non-users may have obtained similar information through other channels (search, calling a nurse line, reading drug inserts). No direct "do you regret not consulting AI for this decision?" survey was identified. This is the most data-sparse side of the entry.
  2. [2] ABA Banking Journal (reporting on Wells Fargo and TD Bank surveys) — Bank Surveys Find Consumers Increasingly Turning to AI for Financial Advice
    Bank Surveys Find Consumers Increasingly Turning to AI for Financial Advice
    統計値
    ~90% of US adults who used AI for financial decisions and acted on the advice said results were 'profitable or worthwhile' (Wells Fargo 2026); 55% of adults use AI for financial management decisions (TD Bank 2026)
    抜粋
    “"19% of U.S. adults used AI for financial advice; 38% among Gen Z. Two-thirds of those who used AI acted on its suggestions. Approximately 90% of those who acted said the results were 'profitable or worthwhile.'" ”
    出典データ
    2026-04-01
    アクセス日
    2026-05-11
    計算過程
    Wells Fargo consumer survey and TD Bank consumer survey, both reported April 2026. Sample sizes and full methodology not disclosed. The 90% "worthwhile" self-report is the most positive available outcome figure for AI financial consultation but is highly susceptible to self-serving bias: people who acted on AI advice and lost money are less likely to report the action as worthwhile, but are also less likely to be included in a consumer satisfaction survey. Used here as directional corroboration that AI financial consultation produces positive self-reported outcomes at high rates, supporting the inaction-regret proxy. Not used as a primary figure due to methodological opacity.

注意事項

全般にわたるプロキシ測定。「この決定のために AI に相談したことを後悔していますか?」または「決定する前に AI に相談しておけばよかったと思いますか?」と個人に直接問う調査はない。両側とも完全に隣接データから構築されている: 結果品質研究(行動側リスク用)、報告された利益(不作為側機会費用用)、行動測定(医療提供者訪問のスキップ率)。-0.06 の regret_delta は不作為優位として確実に分類するには小さすぎる; 証拠がどちらのパターンも明確に支持しないため「混合」として分類されている。行動側のリスクは領域および AI の使用方法によって劇的に変動する: 医師の診察を補完する(低リスク、高利益)対 重大な症状でそれを置き換える(高リスク)。学術的精度研究(21-49%の問題応答率)は特に医療的質問に対する AI のパフォーマンスを反映する — 最高の利害がある領域。財務および一般的な人生の決定はおそらく問題応答率は低いが、出版された精度ベンチマークは少ない。NEJM AI 過信頼研究は特に重要な警告である: 問題応答を害に変換する機構はユーザーがそれらを検出できないことであり、注釈の少ない自信ある枠組み(UCLA/BMJ Open 研究で文書化)は系統的にこの不確実性を隠す。「AI を使う」は単一の行動ではない: 医師の診察に備えて AI の要約を読むことは、医師に会う代わりに AI 診断に基づいて行動することとは範疇的に異なる。このエントリはこれらの異質な使用を集約しており、それはその精度を制限する。Wells Fargo および TD Bank の自己報告データは方法論について不透明であり、方向性としてのみ扱うべきである。AI の能力は急速に向上している; 2025-2026年からの精度と信頼性ベンチマークは12-24か月後に適用されるものとは異なる可能性が高い。このエントリはデータセットの大半より賞味期限が短い。

生データ: /api/decisions.json

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