Ewen Callaway:

Students have been handed another excuse to skip class from an unusual quarter. New psychological research suggests that university students who download a podcast lecture achieve substantially higher exam results than those who attend the lecture in person.
Podcasted lectures offer students the chance to replay difficult parts of a lecture and therefore take better notes, says Dani McKinney, a psychologist at the State University of New York in Fredonia, who led the study.
“It isn’t so much that you have a podcast, it’s what you do with it,” she says.
Skipping class
Launched less than two years ago, Apple’s iTunes university offers college lectures on everything from Proust to particle physics to students and the public. Some universities make their lectures available to all, while others restrict access to enrolled students. Some professors even limit downloads to encourage class attendance, McKinney says.
To find out how much students really can learn from podcast lectures alone – mimicking a missed class – McKinney’s team presented 64 students with a single lecture on visual perception, from an introductory psychology course.