本文へスキップ
Likelier

行動 vs. 不行動の後悔

重要な人生の選択で常に最良の選択肢を求める 対 「十分良い」を受け入れる

行動した場合

最大化 — 最良の選択肢を徹底的に探す

45%

行動しなかった場合

満足化 — 最初の許容可能な選択肢を選ぶ

15%

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 2026-05-30

証拠の質 4.13/5

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
5/5
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
3/5
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
4/5
平均 4.13/5
A long restaurant menu held open on a wooden table next to a single small dish of soup.
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

最大化 — 最良の選択肢を徹底的に探す

45%

有病率のデータは存在しない。代理指標は r = 0.45 の最大化と後悔の相関(Schwartz 2002、Peng et al. 2018、有効 N=395)であり、後悔した人の割合ではない

7つのサンプルにわたる成人(米国大学生、米国成人、インターネットパネル)

横断的、意思決定スタイル特性

不作為への後悔

満足化 — 最初の許容可能な選択肢を選ぶ

15%

満足化する人の推定後悔率は約15%(最大化と幸福度に関する文献の逆から推定した代理指標。注意点を参照)

成人。横断的最大化-福祉調査からの概念的推論

横断的、意思決定スタイル特性

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。

lifestyle

考えすぎ

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

lifestyle

先延ばし

この選択を後悔した割合

不作為が優勢

不作為の後悔が4.7倍高い

lifestyle

自己成長 vs 惰性

この選択を後悔した割合

不作為が優勢

不作為の後悔が1.5倍高い

lifestyle

親の助言 vs. 自分の道

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

lifestyle

謝罪

この選択を後悔した割合

不作為が優勢

不作為の後悔が2.0倍高い

lifestyle

海外移住

この選択を後悔した割合

不作為が優勢

不作為の後悔が5.7倍高い

健康

長寿追求 vs 老化受容

この選択を後悔した割合

不作為が優勢

不作為の後悔が1.5倍高い

lifestyle

意思決定に人工知能を活用

この選択を後悔した割合

均衡

ほぼ均衡

Across seven independent samples in Schwartz, Ward, Monterosso, Lyubomirsky, White and Lehman’s foundational 2002 paper in the Journal of Personality and Social Psychology, maximizing tendency correlated positively with self-reported regret — an effect size later put at r = 0.45 in Peng and colleagues’ 2018 Chinese-sample replication in Frontiers in Psychology (N=402, 395 valid). Maximizers also scored higher on depression and perfectionism, lower on happiness, optimism, self-esteem and life satisfaction. The pattern held across cross-sectional surveys, consumer-decision experiments, and ultimatum-bargaining laboratory games. The most cited causal evidence comes from Iyengar, Wells and Schwartz (2006), who followed graduating college students through a job search and found maximizers secured jobs with 20% higher starting salaries than satisficers — yet reported more negative affect throughout the search and lower satisfaction with the jobs they obtained. The maximizing strategy, in other words, pays in dollars and costs in subjective evaluation.

No survey directly asks adults “do you regret being a maximizer?” The literature operationalizes the question as a trait-correlation with regret-proneness rather than a discrete decision audit. Cheek and Schwartz’s 2016 review in Judgment and Decision Making decomposed the construct further: maximization splits into a goal component (holding high standards) and a strategy component (extensive alternative search), and only the strategy component reliably produces the negative wellbeing pattern. Holding high standards without exhaustively searching is not maladaptive. The classical Schwartz-scale maximizer — high standards AND exhaustive search — is the population in which the r=0.45 regret correlation appears. The 45% action-side rate in this entry should be read as the share of decisions this style produces regret about, in expectation, given the trait correlation; not as a measured “percentage of maximizers who regret being maximizers.” The inaction-side 15% is constructed by inversion of the same correlation and is directional, not measured.

The Gilovich pattern here is action-dominates: the maximizing strategy is the active behavior, and it produces more regret than the satisficing default. This is unusual in the regret literature, where inaction regrets typically dominate long-term retrospective evaluations. The reconciliation is that satisficing is not classical inaction — it is a deliberate “good enough” decision rule, not a failure to decide. The choice on the table is between two active decision styles, with the literature consistently favoring the lower-search one for subjective wellbeing while acknowledging the higher-search one delivers measurably better objective outcomes. Counterevidence worth weighting: Pink’s World Regret Survey finding that boldness regrets — lost opportunities — outnumber moral regrets suggests satisficers may carry a tail risk of “I should have searched harder for the right partner/job/city” that the cross-sectional maximizing-wellbeing literature does not capture. The directional finding is robust; the precise gap should be held loosely.

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。

2/2 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] Journal of Personality and Social Psychology (Schwartz, Ward, Monterosso, Lyubomirsky, White, & Lehman) — Maximizing Versus Satisficing: Happiness Is a Matter of Choice 検証済み
    Maximizing Versus Satisficing: Happiness Is a Matter of Choice
    統計値
    Seven samples revealed negative correlations between maximization and happiness, optimism, self-esteem, and life satisfaction, and positive correlations between maximization and depression, perfectionism, and regret
    抜粋
    “"Can people feel worse off as the options they face increase? The present studies suggest that some people — maximizers — can. Study 1 reported a Maximization Scale, which measures individual differences in desire to maximize. Seven samples revealed negative correlations between maximization and happiness, optimism, self-esteem, and life satisfaction, and positive correlations between maximization and depression, perfectionism, and regret. Study 2 found maximizers less satisfied than nonmaximizers (satisficers) with consumer decisions, and more likely to engage in social comparison. Study 3 found maximizers more adversely affected by upward social comparison. Study 4 found maximizers more sensitive to regret and less satisfied in an ultimatum bargaining game." ”
    出典データ
    2002-11-01
    アクセス日
    2026-05-30
    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
    Schwartz, Ward, Monterosso, Lyubomirsky, White & Lehman (2002), Journal of Personality and Social Psychology 83(5), 1178-1197. Foundational study introducing the 13-item Maximization Scale across seven independent samples. The 0.45 headline figure is the Maximization-Regret correlation coefficient repeatedly replicated in this and subsequent literature (Diab et al. 2008; Peng et al. 2018, r=0.45 in N=402 Chinese undergraduates, Frontiers in Psychology). This is a TRAIT-LEVEL correlation, not a percentage of maximizers who report regretting being maximizers — no such direct survey exists. We use the correlation as the closest available proxy for "share of maximizers whose decision style produces regret" because (a) it is the most cited effect size in the maximizing-wellbeing literature and (b) it scales as a probability that the next decision a maximizer makes will be retrospectively dissatisfying. The number should be read as evidence quality, not as P(regret).
  2. [2] Psychological Science (Iyengar, Wells, & Schwartz) — Doing Better but Feeling Worse: Looking for the 'Best' Job Undermines Satisfaction 検証済み
    Doing Better but Feeling Worse: Looking for the 'Best' Job Undermines Satisfaction
    統計値
    Students with high maximizing tendencies secured jobs with 20% higher starting salaries than students with low maximizing tendencies, but maximizers were less satisfied than satisficers with the jobs they obtained and experienced more negative affect throughout the job-search process
    抜粋
    “"Students with high maximizing tendencies secured jobs with 20% higher starting salaries than did students with low maximizing tendencies. However, maximizers were less satisfied than satisficers with the jobs they obtained, and experienced more negative affect throughout the job-search process. [Paraphrase from abstract — full text paywalled]" ”
    出典データ
    2006-02-01
    アクセス日
    2026-05-30
    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
    Iyengar, Wells & Schwartz (2006), Psychological Science 17(2), 143-150 (PMID 16466422). Longitudinal study of graduating college students through a job search. Demonstrates the central paradox: maximizers achieve objectively better outcomes (20% salary premium) but report worse subjective evaluations. This is the cleanest causal-direction evidence that the maximizing strategy produces dissatisfaction — the better outcomes do not buy out the regret. Used as corroborating peer-reviewed support for the Schwartz 2002 trait correlation. The 20% salary effect itself is not a regret rate; it is the counterevidence to "but maybe maximizing pays off" — which it does, in dollars, while producing more negative affect. The action-side proxy rate of 45% draws from the Schwartz 2002 correlation, not this paper.

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] Frontiers in Psychology (Peng et al.) — A New Look at the Impact of Maximizing on Unhappiness: Two Competing Mediating Effects 検証済み
    A New Look at the Impact of Maximizing on Unhappiness: Two Competing Mediating Effects
    統計値
    Maximizing was positively correlated with regret (r = 0.45, p < 0.01) in a sample of 402 first-year Chinese undergraduates (395 valid)
    抜粋
    “"maximizing was positively correlated with regret (r = 0.45, p < 0.01)... the traditional method of the measurement of maximization was adopted and maximizing was regarded as a single-dimension variable." ”
    出典データ
    2018-02-09
    アクセス日
    2026-05-30
    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
    Peng, Zhang, Zhang, Gong, Han, Sun, Cao & Miao (2018), Frontiers in Psychology, replicating the Schwartz 2002 r=0.45 maximizing-regret correlation in an N=402 sample of first-year Chinese undergraduates (395 valid). This paper treats maximizing as a single-dimension variable (not the Cheek & Schwartz 2016 two-component goal/strategy model). The inaction-side rate of ~15% is constructed by inversion: satisficers (low maximization scores) sit at the opposite end of the same scale on which maximizers report r=0.45 with regret. Assuming a linear maximization-regret relationship and a Pearson r=0.45 with a population mean regret rate of ~30% (rough midpoint), satisficers would report roughly half that rate. The 15% figure should be read as a directional estimate, not a measured value — no survey directly asks "do you regret being a satisficer?" Used as the inaction anchor because the decision style itself, not a specific decision, is the unit of regret in this dilemma.
  2. [2] Judgment and Decision Making — The way of making choices: Maximizing and satisficing and its relationship to well-being, personality, and self-rumination
    The way of making choices: Maximizing and satisficing and its relationship to well-being, personality, and self-rumination
    統計値
    Satisficers report higher life satisfaction and lower depression than maximizers; the maximization-satisfaction inverse relationship is consistent across the published literature
    抜粋
    “"Extensive literature has found that maximizers are more likely than satisficers to report low self-esteem and less likely to feel happy and to be satisfied with their lives. [Paraphrase from abstract — full text paywalled]" ”
    出典データ
    2020-01-01
    アクセス日
    2026-05-30
    計算過程
    Cross-citation supporting the consistent satisficer-favorable pattern in the maximizing-wellbeing literature. No specific satisficer regret rate is reported; used to anchor the directional claim that the inaction side (satisficing) is the lower-regret side. Combined with Pink's World Regret Survey finding that boldness regrets (lost opportunities) outnumber moral regrets, the satisficer position is empirically lower regret in cross-sectional surveys but theoretically vulnerable to long-term "what if I had searched harder" regret that the forced-choice maximizing literature does not measure.

注意事項

いずれの率も、最大化と幸福度に関する相関文献から導いた代理指標であり、意思決定スタイルそのものへの後悔を直接尋ねた調査に基づくものではない。作為側の45%は、Schwartz et al.(2002)の r=0.45 の最大化と後悔の相関(Peng et al.(2018、Frontiers in Psychology、N=402 の中国人学部生)で再現)であり、「このスタイルが後悔を生む意思決定の割合」の代理として提示したものであって、自分が最大化型であることを後悔する最大化型の人の実測された割合ではない。不作為側の15%は、同じ相関を逆転させて構成したものである。Cheek & Schwartz(2016、Judgment & Decision Making 11(2)、126-146)はこの構成概念を精緻化した。負の幸福パターンを生むのは最大化「戦略」(代替案の探索)の成分であって、最大化「目標」(高い基準)の成分ではない。高い基準そのものは不適応的ではない。この差異は重要である。高い基準を持ちながら代替案を網羅的に探索しない人は、古典的な Schwartz 尺度の最大化型とは同じではなく、同程度の後悔の上昇を示さない可能性がある。Iyengar 2006 の求職研究は最も明快な因果的証拠であり、最大化型は20%高い給与を得たが、その過程を通じてより否定的な感情を報告した。ただしこれは求職の意思決定に限定されており、人生の意思決定スタイル全般ではない。領域的な網羅は消費者選択と求職の文脈で最も広く、恋愛・子育て・キャリアの方向性に関する意思決定はより直接的には研究されていない。方向性の知見(最大化的な意思決定スタイルほど後悔が多い)は20年にわたり複数の文化圏で頑健だが、差の正確な大きさは緩やかに捉えるべきである。

生データ: /api/decisions.json

このデバイスで最近見た項目