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

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.

State v. John J. Watson, 227 Wis.2d 167, 595 N.W.2d 403 (1999), reversing unpublished decision
For Watson: Richard D. Martin, SPD, Milwaukee Appellate

Holding: Admissibility of a psychologist’s (preliminary hearing, 980 proceeding) testimony that Watson’s crime was sexually motivated is upheld:

¶ 52. … While the average lay person may be able to draw reasonable inferences from facts, an expert ought to be able to show how a person’s offense relates to the person’s purported mental disorder,

State v. Rodney G. Zivcic, 229 Wis.2d 119, 598 N.W.2d 565 (Ct. App. 1999)
For Zivcic: John J. Carter

Holding: The trial court’s discretionary determination to admit expert testimony on the HGN sobriety test is upheld. In particular, specialized knowledge in the “underlying principles” of HGN testing isn’t necessary. All that’s required is expertise in administering and evaluating the test.

State v. Kurt J. Doerr, 229 Wis.2d 616, 599 N.W.2d 897 (Ct. App. 1999)
For Doerr: John M. Carroll

Holding: A preliminary breath test (unlike certain other breath test instruments) requires expert testimony to explain its import:

The PBT device has not been approved by the DOT and does not receive a prima facie presumption of accuracy to establish a defendant’s blood alcohol level. Therefore,