Law Commons^™

Who Owns Children’S Dna?, Nila Bala

Michigan Law Review

In recent years, DNA has become increasingly easy to collect, test, and sequence, making it far more accessible to law enforcement. While legal scholars have examined this phenomenon generally, this Article examines the control and use of children’s DNA, asking who ultimately owns children’s DNA. I explore two common ways parents—currently considered “owners” of children’s DNA— might turn over children’s DNA to law enforcement: (1) “consensual” searches and (2) direct-to-consumer testing. My fundamental thesis is that parental consent is an insufficient safeguard to protect a child’s DNA from law enforcement. At present, the law leaves parents in complete control of …

Introduction, Shari S. Diamond, Richard O. Lempert

Articles

Experts bedeviled the legal system long before seventeenth-century Salem, when the town's good citizens relied on youthful accusers and witchcraft experts to identify the devil's servants in their midst. As in Salem, claims of expertise have often been questioned and objections raised about the bases of expert knowledge. Expertise, then and now, did not have to be based on science; but the importance of science and the testimony of scientific experts has since medieval times been woven into the fabric of the English jurisprudence that Americans inherited. In cases as long ago as 1299 we find examples of courts seeking …

Potential Responses To The Melendez-Diaz Line Of Cases, Richard D. Friedman

Articles

Criminal prosecution is increasingly dependent on proof of the results of forensic laboratory tests. They are used, for example, to prove that a given substance contains cocaine; the prove what a driver’s blood alcohol content was; and to demonstrate that the DNA profile of some substance found at the crime scene matches that of the accused.

In Melendez-Diaz v. Massachusetts, 129 S.Ct. 2527 (2009), the United States Supreme Court resolved a question that had divided the lower courts in the wake of Crawford v. Washington, 541 U.S. 36 (2004). The Melendez-Diaz Court held by a 5-4 vote that forensic laboratory …

After The Dna Wars: Skirmishing With Nrc Ii, Richard O. Lempert

Articles

This article traces some of the controversies surrounding DNA evidence and argues that although many have been laid to rest by scientific developments confirmed in the National Research Council's second DNA report, there remain several problems which are likely to lead to continued questioning of standard ways prosecutors present DNA evidence. Although much about the report is to be commended, it falls short in several ways, the most important of which is in its support for presenting random match probabilities independent of plausible error rates. The article argues that although one can sympathize with the NRC committee's decision as an …

The Honest Scientist's Guide To Dna Evidence, Richard O. Lempert

Book Chapters

Thank you for your invitation to participate in the DNA symposium. As you know DNA has never been a prime research focus of mine, and I have been so preoccupied with my own work on ITPT (intertemporal personal transportation) that I thought I must decline. Happily, however, the two projects came together, for I recently had an amazing breakthrough during which by coincidence I stumbled across a book entitled A Century of DNA Testing and holocopied (a fancy form of Xeroxing) the following few pages for you.

The Honest Scientist's Guide To Dna Evidence, Richard O. Lempert

Articles

The honest scientist recognizes that she herself is a test instrument, and a fallible one at that. Subjectivity inescapably enters into any human endeavor, and should not be denied. DNA testing is rife with subjective elements, no place more so than at the crucial stage of deciding whether a match exists. On the one hand, non-matching extraneous bands may sometimes be properly disregarded and patterns that do not quite meet objective matching criteria may be appropriately regarded as incriminatory matches. On the other hand, band patterns that do meet objective matching criteria may be treated as exonerative depending on how …

Comment: Theory And Practice In Dna Fingerprinting, Richard O. Lempert

Articles

Throughout her useful paper on DNA identification, Professor Roeder properly attends to both theory and practice. Thus she acknowledges the theoretical soundness of certain criticisms that have been made of the standard paradigm used to evaluate DNA random match probabilities but argues that in practice these criticisms matter little. I am thinking here of the arguments that those cautioning against overweighing DNA evidence have made regarding the undeniable existence of population substructure and its potential implications for independence assumptions supporting the application of the product rule and for the use of convenience samples, such as data garnered from no more …

The Suspect Population And Dna Identification, Richard O. Lempert

Articles

Forensic DNA analysis typically proceeds by first determining whether alleles (one of two or more alternative forms of a gene) found in DNA apparently left by the perpetrator of a crime at a crime scene (the "evidence sample") match alleles extracted from a sample of the suspected criminal's blood (the "suspect sample"). If alleles drawn from the two sources match, the next step is to provide information about the probative value of the match by estimating the probability that alleles extracted from the blood of some random individual would have matched the alleles in the evidence sample. Thinking in terms …

Dna, Science And The Law: Two Cheers For The Ceiling Principle, Richard O. Lempert

Articles

The ceiling principle is an intentionally conservative way of estimating the frequency with which individuals who share particular alleles appear in the general population. It establishes frequencies for each allele by taking random samples of 100 individuals from each of 15 to 20 populations and using the largest frequency with which the allele is found in any of these populations or 5 percent, whichever is larger, as an estimate of the allele's frequency in the population of interest. These frequencies are then multiplied to yield an estimate of the likelihood that a randomly selected person would exhibit the same allelic …

Telling Tales In Court: Trial Procedure And The Story Model, Richard O. Lempert

Articles

There are three ways in which stories may figure prominently at trials. First, litigants may tell stories to jurors. Not only is there some social science evidence that this happens, but trial lawyers have an instinctive sense that this is what they do. Ask a litigator to describe a current case and she is likely to reply, "Our story is ... " Second, jurors may try to make sense of the evidence they receive by fitting it to some story pattern. If so, the process is likely to feed back on itself. That is, jurors are likely to build a …

Some Caveats Concerning Dna As Criminal Identification Evidence: With Thanks To The Reverend Bayes, Richard O. Lempert

Articles

The conference panel at which this paper was originally presented was structured along the lines of a debate. The three speakers who were supposed to advocate the use of DNA evidence were labeled, as is customary, Proponents. But those who were supposed to take the negative side were not called Opponents. Rather they were labeled Caveators. I do not know who is responsible for this label, but I think it gets things exactly right. To my mind anyone considering DNA as criminal identification evidence should be a Caveator. The promise and utility of DNA analysis in identifying the perpetrators of …