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除了破坏性效应之外:外部奖励可以保护神经内在奖励
Hiroaki Ayabe1, Takahiko Koike2, Ayumi Yoshioka3
1Graduate School of Education, The University of Tokyo, Japan; Division of Cerebral Integration, National Institute for Physiological Sciences, Japan; Department of Physiological Sciences, School of Life Science, SOKENDAI (The Graduate University for Advanced Studies), Japan.
外在奖励的撤回会根据奖励类型对内在动机产生不同的影响. 虽然货币奖励和社会奖励都保持了内在价值,但只有社会奖励才能保持动机驱动力,从而澄清了破坏效应.
科学领域:
- 心理学 心理学 心理学
- 神经科学是一个神经科学.
- 行为经济学是一种行为经济学.
背景情况:
- 自决理论表明,外在奖励的撤回可以降低内在的动机.
- 在不同奖励类型 (例如,货币与社会) 中,这种破坏效应的变异性尚未完全理解.
- 以前的研究经常将内在动机视为单一的构造,忽视了内在价值 (喜欢) 和动机驱动 (想要) 之间的区别.
研究的目的:
- 调查外在奖励撤回如何对内在价值和动机驱动有不同的影响.
- 探索外在奖励破坏效应的变化潜在机制.
- 区分内在动机的神经和行为组成部分.
主要方法:
- 功能磁共振成像 (fMRI) 用于研究54名参与者在三个条件:控制,金钱奖励和社会奖励.
- 参与者从事任务,奖励组经历奖励和无奖励阶段.
- 通过奖励系统激活 (fMRI) 来评估内在价值,通过自愿参与来评估动机驱动.
主要成果:
- 通过奖励系统激活表示的内在价值在对照组下降,但在奖励撤回后,在货币和社会奖励组保持稳定.
- 通过自愿参与来衡量动机驱动力,在金钱奖励组下降,但在社会奖励组持续.
- 外在奖励的撤回对内在价值和动机驱动有不同的影响,具体取决于奖励类别.
结论:
- 外在奖励的撤回对内在价值和动机驱动有明显的影响.
- 社交奖励似乎比金钱奖励更有效地保护了退出后的内在价值和动机驱动.
- 了解内在价值和动机驱动之间的区别对于解释外在奖励对内在动机的微妙影响至关重要.
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