Aspects of learning behavior during two types of university courses, a blended learning course and a fully online course, were examined using note-taking activity. The contribution of students' characteristics and styles of learning to note-taking activity and learning performance were analyzed, and the relationships between the two types of courses were compared using causal analysis techniques. In addition, lexical analysis of the contents of notes taken was introduced. Features of notes taken, such as the number of terms, the word ratios of students' notes and the degree of coverage of the lecturer's notes were compared. The results of the evaluation of the two types of learning styles were summarized by determining the relationships between students' characteristics and metrics of the contents of notes taken. The metrics were significantly different between the two learning styles. The contributions of students' characteristics to learning performance were also different. These results provide points to consider for the design and organization of the two types of learning.