预期想象对延迟折扣的影响:基于预期想象能力可塑性的研究

The Effect of Episodic Future Thinking on Delay Discounting:The Malleability of Episodic Prospective Ability

依据情境预期−情绪模型,招募151名大学生被试,通过3(预期情绪效价:积极、消极、中性)×2(组别:训练组、控制组)×2(测量时间:前测、后测)混合实验设计,从可塑性角度探究预期想象能力对延迟折扣的影响,结果发现:(1)预期想象训练有效提升了个体的预期想象能力,且预期想象能力越强,延迟折扣率的变化程度越大;(2)这一过程受到预期情绪效价的调节,即积极预期情绪会降低延迟折扣率,消极预期情绪会提高延迟折扣率,而中性预期情绪则不会显著改变延迟折扣率。结果表明,预期想象能力影响延迟折扣率的变化程度,而预期情绪效价调节延迟折扣方向。

According to the emotion of episodic prospection hypothesis,the present study attempted to use a 3(prospective emotional valence:positive,negative,neutral)×2(group:training,control)×2(test time:pre,post)mixed design to investigate the effect of episodic prospective ability on delay discounting.The results showed that:1)The stronger the episodic prospective ability,the greater the degree of change in delay discounting rate.2)This process was also moderated by prospective emotional valence,that is,positive prospective emotion decreased delay discounting rate,and negative prospective emotion increased delay discounting rate.These results illustrate that episodic prospective ability influences the extent of delay discounting rate,whereas prospective emotional valence moderates the direction of delay discounting.