ABSTRACT
This chapter evaluates cognitive load from the perspective of human responses, which is a data-driven approach for cognitive load measurement. It explains the methods for cognitive load measurement via behavioral and psychological modalities, utilizing data generated while the user interacts with the external environment during a cognitive task. The behavioral and physiological methods for cognitive load measurement deal with the real-time user data and are suitable for deployment within a multimodal context. The observed human behaviors can be suitable for cognitive load assessment because a user experiencing a high volume of cognitive load will show behavioral symptoms relating to the management of that load. The physiological approach for cognitive load measurement is based on the assumption that any changes in human cognitive functions are reflected in human physiology. Multimodal cognitive load measurement also depends on the requirements of realistic deployment. Cognitive load is an important issue in various application areas such as human–computer interaction, traffic control, driving, and military command.
