Current Status and Prospect in Research on Learner Cognitive Load Measurement

In recent years, a large number of studies have explored the specific methods of measuring learners' cognitive load from the perspectives of task performance, subjective assessment and physiological signals. In terms of task performance measurement, relevant researches mainly focus on learners' objective performance evaluation, and dual task measurement is an important method of task performance measurement. In terms of subjective assessment, relevant researches mainly focus on the development of cognitive load measurement scale. In terms of physiological signal measurement, different cognitive loads can lead to differences among learners in heart rate variability (HRV), electroencephalogram (EEG), skin electrical activity, and eye movement signals, etc., and cognitive loads are mainly indirectly measured using relevant instruments.