Can any of the more technically minded database-researchers on the list give me an answer to why detection rates using the UK's National DNA database have been declining as the database gets larger? See here: http://gizmonaut.net/blog/uk/2009/10/ndnad_more_and_less_of_the_same.html I have a purely instinctive reaction (as does the author of this blog post) that this should be the case, but I am not sure that I can explain this reaction in any more detail - can someone help? David. Dr David Murakami Wood Canada Research Chair (Tier 2) in Surveillance Studies | Associate Professor Surveillance Studies Centre | Department of Sociology | Queen's University, Ontario e-mail: [log in to unmask] | blog: http://ubisurv.wordpress.com Managing Editor | Surveillance & Society | http://www.surveillance-and-society.org Trustee | Surveillance Studies Network | http://www.surveillance-studies.net **************************************************** This is a message from the SURVEILLANCE listserv for research and teaching in surveillance studies. To unsubscribe, please send the following message to <[log in to unmask]>: UNSUBSCRIBE SURVEILLANCE For further help, please visit: http://www.jiscmail.ac.uk/help ****************************************************