SUPREME JUDICIAL COURT DIRK GKEINEDER - Mass Cases

SUPREME JUDICIAL COURT DIRK GKEINEDER - Mass Cases SUPREME JUDICIAL COURT DIRK GKEINEDER - Mass Cases

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iased and scientifically invalid methodology. The specific facts underlying this claim, including evidence presented at the post-trial evidentiary hearing and in a number of post-trial affidavits, are set forth at pp. 16-41 of the Memorandum of Law in Sumort of Defendant’s Motion for New Trial (A. 144-168)and at pp. 2-8 of Defendant’s Post-Hearins Memorandum of Law ResDectins Ineffective Assistance Provided bv Trial Counsel in Failins to Challenqe Commonwealth‘s DNA and Footprint Evidence (8. 852-858). B. Sununary of Applicable Law. 1. Exclusion of unreliable scientific evidence. Under Commonwealth v. Laniqan and its progeny, the trial judge serves as a “gatekeeper“ in making a “preliminary assessment” of whether proffered scientific evidence is sufficiently reliable to be admitted at trial. The gatekeeper role encompasses, not only the underlying scientific principles and methodology, but also “whether the testing was properly performed. ” Commonwealth v. Patterson, 445 Mass. 626, 647-648 (2005). Novel applications of an otherwise reliable technique “must be independently tested against the Laniaan-Daubert standard.” a. at 655. Scientifically unreliable evidence must be excluded “because evidence of this character has too great a potential. for affecting a jury‘s judgment.“ 44

Commonwealth v. Curnin, 409 Mass. 218, 222 n.7 (1991). The admission of unreliable evidence may violate a defendant's constitutional right to due proceas under the Fifth and Fourteenth Amendments and Article XII. a, e.q., Manson v. Brathwaite, 432 U.S. 38, 112 (1977); Commonwealth v. Johnson, 420 Mass. 458, 461-463 (1995). 2. Ineffective aaaiBtance of Every criminal defendant is guasanteed effective assistance of counsel by the Sixth and Fourteenth Amendments and Article XII. Stricklandv. Washinston, 466 U.S. 668 (1984) ; Commonwealth v. Martinez, 425 Mass. 382, 387 (1997) I Both the federal and state courts have delineated a two-pronged test for determining whether a constitutional violation of this right: has occurred. The first prong is virtually identical - whether counsel's performance was seriously deficient, measured against an objective standard of reasonableness. Wiaqins v. Smith, 539 U.S. 510, 521 (2003); -, 366 Mass. 89, 96-99 (1974). The prejudice prong has been enunciated slightly differently by the federal and Massachusetts state courts. Under federal law, the defendant must show that there is a reasonable probability that but for counsel's 22 This summary of relevant law applies to all of Greineder's ineffective assistance claims. 45

iased and scientifically invalid methodology.<br />

The specific facts underlying this claim, including<br />

evidence presented at the post-trial evidentiary hearing<br />

and in a number of post-trial affidavits, are set forth<br />

at pp. 16-41 of the Memorandum of Law in Sumort of<br />

Defendant’s Motion for New Trial (A. 144-168)and at pp.<br />

2-8 of Defendant’s Post-Hearins Memorandum of Law<br />

ResDectins Ineffective Assistance Provided bv Trial<br />

Counsel in Failins to Challenqe Commonwealth‘s DNA and<br />

Footprint Evidence (8. 852-858).<br />

B. Sununary of Applicable Law.<br />

1. Exclusion of unreliable scientific<br />

evidence.<br />

Under Commonwealth v. Laniqan and its progeny, the<br />

trial judge serves as a “gatekeeper“ in making a<br />

“preliminary assessment” of whether proffered scientific<br />

evidence is sufficiently reliable to be admitted at<br />

trial. The gatekeeper role encompasses, not only the<br />

underlying scientific principles and methodology, but<br />

also “whether the testing was properly performed. ”<br />

Commonwealth v. Patterson, 445 <strong>Mass</strong>. 626, 647-648 (2005).<br />

Novel applications of an otherwise reliable technique<br />

“must be independently tested against the Laniaan-Daubert<br />

standard.” a. at 655. Scientifically unreliable evidence<br />

must be excluded “because evidence of this character has<br />

too great a potential. for affecting a jury‘s judgment.“<br />

44

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