两个实验用于研究情绪对学习判断的影响及其机制，结果表明：（1）首轮回忆测验成绩可以通过影响个体的情绪状态来影响后继的学习判断以及回忆测验和学习判断的绝对准确性。（2）情绪可以影响学习判断和个体对学习内容的加工深度，加工深度的提高有利于个体的回忆成绩，学习判断和回忆成绩共同影响着学习判断的准确性。

Judgement of learning (JOL) refers judgment made by participants at the end of a learning trial regarding the likelihood of remembering the acquired information on a subsequent memory test. JOL is an important form of metacognitive monitoring,as it affects metacognitive control,for example,learning time distribution and choice of restudy directly or indirectly. The UWP(underconfidence-with-practice ) effect has been the study hotspot of JOL. although many theories try to explan the cause of UWP effect, none can perfectly give the answer. According these theories, great attentions are paid to the external factors such as learning materials and learning methods,few studies concern individual differences among studies. This research tries to prove whether emotion is one of the factors that lead to UWP effect, if so,the current study also tries to explor the mechanism and individual differences. Two experiments are conducted. Experiment 1 explors whether emotion affect JOL, experiment 2 focus on the internal mechanism, the results show are as follows: (1) The first trial of memory test can affect JOL,recall and absolute accuracy of JOL by individual’s emotion. (2)Emotion can affect JOL and individual’s depth of cognitive process for study, which will promote individual’s memory. JOL and recall together influence the accuracy of JOL.