I need a source that will tell me the accuracy of various fields of forensic science. By fields I mean such as: DNA, fingerprinting, polygraph, Time of Death, Voice prints, etc.
Thanks

I do not know a source, but one of my HS classmates is (just retired) a forensic expert..I'll try to find out...
But , till then let me give you my opinion...l

DNA and Fingerprint - Totally 100% accurate

Time of Death - Can be as accurate as an hour or less..Depends on when the body was found...

Voice Prints _ I don't know..

Polygraph - Unrelieable, not accepte by courts...

Thanks so much for your help so far. I'd really appreciate it if you would find out.

As donrent didn't get back to you as promised, here are some sources on the accuracy of the various fields of forensic science that you asked about. I hope they are of help to you.

DNA Fingerprinting

DNA Profiling

Problems with Polygraphs

Can They Fool the Polygraph?

Time of death

Voice prints as evidence

I'd have to disagree with Donrent about fingerprints being "totally 100% accurate." (I'm talking about literal fingerprints made by the ridges of skin on our fingertips -- not DNA "fingerprinting.")

Quite recently the FBI was embarrassed by fingering the wrong guy in the Madrid bombing case in a high-profile fiasco, as described, e.g., here.

An article appeared in The New Yorker in 2002 ("DO FINGERPRINTS LIE?" by Michael Specter) fairly critical of the validity of fingerprinting. I tore out the article and then misplaced it (filed under P for "paper" or A for "article"? ) but I managed to find this link to it, so I know I'm not hallucinating!

I don't know where fingerprint evidence stands legally today, but it certainly isn't the gold standard it was once considered.

Even looking at the genetic code is not completely accurate. DNA has the ability to "jump" and slightly change te code.

http://www.sciencedaily.com/releases/2000/07/000710071506.htm

There is nothing that is 100% accurate in any realm of science. At best, one can only be MOSTLY correct.

It wouldn't be science if there weren't room for error.