Try these:
Providing Introductory Psychology Students Access to Online Lecture Notes: 
The Relationship of Note Use to Performance and Class Attendance

Grabe, Mark: Christopherson, Kimberly; Douglas Jason	

Journal of Educational Technology Systems, v33 n3 p295-308 Jul 2005



Voluntary Use of Online Lecture Notes: Correlates of Note Use and Note Use 
as an Alternative to Class Attendance
Mark Grabe

Computers and Education, v44 n4 p409-421 May 2005


Attendance and Attainment study
www.ics.heacademy.ac.uk/italics/vol5iss2/burd-att-italics-06-final.doc
[that's the same one referenced by ian webb]

Barrett R, Rainer A and Marczyk O (2007) “Managed Learning Environments and 
an Attendance Crisis?” The
Electronic Journal of e-Learning Volume 5 Issue 1, pp 1 - 10, available 
online at www.ejel.org

for podcasting:

http://www.emeraldinsight.com/Insight/viewContentItem.do?
contentType=Article&hdAction=lnkhtml&contentId=1581870

Title: Explorations in course-casting: podcasts in higher education 
Author(s): Sarah Bryans Bongey, Gerald Cizadlo, Lynn Kalnbach 
Journal: Campus-Wide Information Systems 
ISSN: 1065-0741 
Year: 2006 Volume: 23 Issue: 5 Page: 350 - 367 
DOI: 10.1108/10650740610714107 
Publisher: Emerald Group Publishing Limited 
Abstract: Purpose – To explore the benefits, challenges, and impact of 
podcasting in higher education and also to provide educators with anecdotal 
and practical advice and information on how to create and distribute 
podcasts. 
Design/methodology/approach – In support of a traditional college course, a 
biology professor implemented podcasts to explore the value of 
coursecasting and its role in student learning. Direct observation, 
attendance counts, and server statistics supplement a survey that was 
distributed to 246 students involved in the project. Five survey questions 
focused on whether the podcasts affected the students' attendance of class, 
students' preferences for listening to and processing of lecture material, 
and students' perceptions of the academic impact associated with the 
podcast availability. 
Findings – Taken together, the responses to the main questions from the 
survey and the student self-reported comments strongly suggest that having 
podcast lectures available to students does not lead to large declines in 
class attendance. For the specific courses that were examined by this 
survey, students overwhelmingly preferred the actual lectures to the 
recorded podcasts. In addition, the large majority of students were using 
the podcasts to increase their understanding of material covered in 
specific lectures. All of these findings seem to indicate that students 
perceive the podcasts as really useful additional resources available to 
help them succeed in their courses rather than as a substitute for more 
traditional methods of learning. 


For info on patterns of use (nothing on attendance but very interesting on 
the issue of levels of engagement):
Evaluation of student engagement with learning supports in the ...
A time line of provision of learning supports, examination time and ... The 
pattern of student access to lecture notes and quizzes could be determined 
from ...
www.rsc.org/images/Finlayson_tcm18-103986.pdf - 


On Mon, 10 Dec 2007 16:41:20 +0000, Bryan Coleman 
<[log in to unmask]> wrote:

> Hello. Does anyone out there know of any research re whether making notes 
and handouts available on-line in advance of a lecture affects actual 
attendance?
>
>Any information gratefully received!
>
>Bryan
>University of Manchester
>[log in to unmask]
>========================================================================