On Point: G. Opinions/experts, Ch. 907

State v. Steven G. Walters, 2003 WI App 24, reversed on other grds., 2004 WI 18
For Walters: Jenelle L. Glasbrenner, David A. Danz

Issue/Holding:

¶28. Again, the admissibility of expert testimony is committed to the discretion of the trial court. Friedrich, 135 Wis. 2d at 15. At the offer of proof hearing, Walters’s proposed expert, Dr.

State v. Thomas Treadway, 2002 WI App 195
For Treadway: Lynn E. Hackbarth
Issue/Holding: Fact that probaiton/parole agent wasn’t mental health specialist didn’t preclude him offering lay expert opinion on likelihood of ch. 980 respondent re-offending. Lay expertise may be found under § 907.02, based on relevant experience, education, and/or training.

State v. Bradley Alan St. George, 2002 WI 50, reversing unpublished court of appeals decision
For St. George: Donald T. Lang, SPD, Madison Appellate

Issue: “Was the circuit court’s exclusion of the testimony of the defendant’s expert witness an erroneous exercise of discretion, or alternatively, a deprivation of the defendant’s constitutional right to present evidence, as the defendant asserted?” ¶2

Holding: The trial court’s rejection of the expert was based on his lack of extensive experience in the area;

State v. Bradley Alan St. George, 2002 WI 50, reversing unpublished court of appeals decision

For St. George: Donald T. Lang, SPD, Madison Appellate

Issue: “Was the circuit court’s exclusion of the testimony of the defendant’s expert witness an erroneous exercise of discretion, or alternatively, a deprivation of the defendant’s constitutional right to present evidence, as the defendant asserted?” ¶2

Holding: The trial court’s rejection of the expert was based on his lack of extensive experience in the area;

State v. Tito J. Long, 2002 WI App 114, PFR filed 5/23/02
For Long: Ann T. Bowe

Issue/Holding: Officer’s background, including “gang training” and investigations into numerous gang-related shootings, made him qualified to testify as to gang activities in city. ¶26.

State v. Carlos R. Delgado, 2002 WI App 38
For Delgado: Richard D. Martin, Diana M. Felsmann, SPD, Milwaukee Appellate

Issue/Holding:

¶8. After reviewing these cases, we can discern some general rules: (1) an expert witness can offer opinion testimony only if it complies with Wis. Stat. § 907.02; (2) the testimony can include opinions regarding symptomatology common to child sexual assault victims; (3) the testimony can include a description of the symptoms exhibited by the victims;

State v. Larry J. Sprosty, 2001 WI App 231, PFR filed

For Sprosty: Jack E. Schairer, SPD, Madison Appellate

Issue: Whether the trial court erred in refusing to qualify a social worker as an expert in this Ch. 980 supervised release proceeding.

Holding: Because the witness had “expertise with respect to treating sex offenders … she was qualified to give her opinion on the ultimate issue.” ¶29.

State v. Joseph F. Rizzo, 2002 WI 20, reversing and remanding 2001 WI App 57, 241 Wis. 2d 241, 624 N.W.2d 854
For Rizzo: Franklyn M. Gimbel

Issue1: Whether testimony by a state’s expert amounted to “Jensen” testimony, i.e., expert opinion that the sexual assault complainant’s behavior was consistent with that of sexual assault victims in general.

Holding:

¶21.

State v. Larry J. Sprosty, 2001 WI App 231, PFR filed
For Sprosty: Jack E. Schairer, SPD, Madison Appellate

Issue: Whether the trial court erred in refusing to qualify a social worker as an expert in this Ch. 980 supervised release proceeding.

Holding: Because the witness had “expertise with respect to treating sex offenders … she was qualified to give her opinion on the ultimate issue.”

State v. Aaron Evans, 2000 WI App 178, 238 Wis.2d 411, 617 N.W.2d 220

For Evans: Steven D. Phillips, SPD, Madison Appellate

Issue: Whether the trial court erroneously exercised discretion in preventing a DNA expert from sitting at counsel table.

Holding: “|10 We are satisfied that, on this record, the circuit court did not erroneously exercise its discretion in denying Evans’s request that Friedman be exempted from the sequestration order.