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Expert Witness testimony South Puget Sound Community College Forensics Department
Expert Witness Jury CSI effect Lay witness: -no opinions Expert witness: -knowledge in particular subject -testify to opinions
Expert Witness Frye v. United States, 293 F. 1013 DC Cir (1923): -generally accepted Daubert v. Merrell Dow Pharmaceuticals, 509 U.S. 579 (1993): -judges are gatekeepers -criteria for admission -precedence
Expert Witness Pre-Trial: -Conference w/attorney -explain processes -explain displays/charts -explain technical testimony -discuss questions -opposing counsel -Know court/courtroom Day of Court: -contact attorney -reports/exhibits Outside Courtroom -professional -don’t discuss case -read your reports -pictures/exhibits
Expert Witness Called In: -walk to stand/address judge -folder in left hand -upright/steady -take stand -remain standing Speak: -clear/loud -oath/straight On the stand: -sit straight -alert -focused -interested
Expert Witness Expert opinion -testing procedures -scientific processes -results -opinion/findings Duty to truth only!
Expert Witness Direct Examination: (established expert) -employment/tenure/duties -education/train/experience Specific case: -role/function -specific actions -opinion (s)
Expert Witness Testifying: -pause for 1-2 seconds -face jury -you set the pace -never lie! -notes/report (ask permission) -case specific/memory aid -permission to get up REMEMBER: RESPECT JUDGE’S HOUSE!!
EXPERT WITNESS Cross Examination: -reasonable doubt/ask discipline questions -articles/studies/error rates -”is it possible?” -don’t argue/courteous/smile -answer what you can