To evaluate this theory, Mueller and Oppenheimer assessed the content of notes taken by hand versus laptop. Their studies included hundreds of students from Princeton and UCLA, and the lecture topics ranged from bats, bread, and algorithms to faith, respiration, and economics. Content analysis of the notes consistently showed that students who used laptops had more verbatim transcription of the lecture material than those who wrote notes by hand. Moreover, high verbatim note content was associated with lower retention of the lecture material. It appears that students who use laptops can take notes in a fairly mindless, rote fashion, with little analysis or synthesis by the brain. This kind of shallow transcription fails to promote a meaningful understanding or application of the information.