リスクの高いオンラインショッピング行動: ストレス反応の役割 目標指向行動から刺激反応習慣への移行
Tobias A Thomas1, Anna M Schmid2, Nicolas K Erdal1
11Department of Psychosomatic Medicine and Psychotherapy, Hannover Medical School, Hanover, Germany.
Journal of behavioral addictions
|September 3, 2025
まとめ
この研究では,リスクの高い買い物行動 (r-BSh) の個人に,ストレスがオンラインショッピングの習慣にどのように影響するか調べました. コルチゾールのレベルは 習慣的な行動を予測し ストレスが重度の症状を持つ人の 習慣的な買い物を促す可能性があることを示唆しています
科学分野:
- 神経科学
- 心理学
- 行動科学
背景:
- 初期段階の買い物障害 (BSD) のストレス誘発による習慣形成に関する研究は限られている.
- 報酬の貶值 (PIT-dev) 後のパヴロヴィアン・ツー・インストゥルメンタル・トランスファー (PIT) は,習慣的な行動を示すことができる.
- リスクの高い買い物をする人 (r-BSh) のストレス下でのPIT-devを調査することは,BSDを理解するために非常に重要です.
研究 の 目的:
- 習慣的な行動の尺度として,報酬の貶值 (PIT-dev) 後のパブロヴィアン-イン-インストゥルメンタル・トランスファー (PIT) 効果を検証する.
- リスクの高い買い物をする人 (r-BSh) のPIT-devに対する急性ストレスの調節作用を調査する.
- r-BShにおけるストレスバイオマーカーと 習慣的な買い物行動の関係を探る
主な方法:
- r-BSh (n=67) と対照群 (n=67) の個人に報酬の貶值を伴う PIT パラダイムが投与された.
- 唾液アルファアミラーゼ (sAA) とコルチゾール (sCort) を測定した.
- ストレス反応を評価するために主観的なストレス評価と唾液バイオマーカーが収集されました.
主要な成果:
- r-BShを持つ個人は,ストレス後より高いsAAレベルを示したが,対照群と比較してsCortと主観的なストレスを示した.
- 報酬の減価は2つのグループで ショッピングに特化した 楽器の行動を減少させました
- コルチゾール反応はPIT- devを有意に予測し,習慣的な行動を示し,症状の重症度とPIT- devへのストレス反応を関連付ける探索的発見があった.
結論:
- BSD症状の重症度が高い個体において,通常の買い物行動へのストレス関連の潜在的なシフトが示唆されています.
- コルチゾール反応は習慣的な行動を予測しますが,全体的な結果は混在しており,さらなる研究が必要でした.
- ストレスがPITに与える影響を明らかにすることは,BSDの予防と早期介入戦略の開発に不可欠です.
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