経験に基づく投資アドバイスの影響に関する実験
Garret Ridinger1, James Sundali1, Federico Guerrero1
1College of Business, University of Nevada, Reno Reno, Nevada, United States.
PloS one
|February 20, 2026
まとめ
以前のコホートからの投資アドバイスは,事実上の根拠が欠如している場合でも,財務決定に大きな影響を与えます. この社会的学習は,資産配置と将来の収益期待に影響を与えます.
科学分野:
- 行動金融は,行動金融に基づいている.
- 社会的学習理論とは
- 意思決定 意思決定をする
背景:
- 社会的な影響と過去の経験が投資決定をどのように形作るかを理解することは極めて重要です.
- 以前の研究は,情報の重要性を強調しているが,経験に基づくアドバイスの役割はあまり探求されていない.
研究 の 目的:
- 世代間投資アドバイスが資産配置とリターン期待に与える影響を調査する.
- 情報価値に関係なく,コホートアドバイスが金融行動に影響を与えるかどうかを判断する.
主な方法:
- 3つのコホートで30年間の資産配分決定をシミュレートする実験.
- 参加者は,リスクのある資産のリターンに関する年間予測 (信念) を,S&P 500データ (1921-2010年) から実際のリターンで提供しました.
- 投資アドバイスの伝送とそのポートフォリオの配分とリスクに対する態度への影響の分析.
主要な成果:
- ネガティブなアドバイスは,その後のコホートにおけるリスクのある資産配分を大幅に減少させた.
- ポジティブなアドバイスとネガティブなアドバイスを受けたコホート間で,割り当ての19%の違いが観察されました.
- 以前のコホート・アドバイザーは,情報内容に関係なく,投資信条やリスクの高い資産配分に一貫して影響を与えた.
結論:
- 以前のコホートからの経験的なアドバイスは,財務の意思決定に深く影響を与えます.
- 純粋な情報内容ではなく,ソーシャル・ラーニングは,投資選択において重要な役割を果たします.
- これは,金融市場を形成する際の伝達された経験の力を強調しています.
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