Further redirect examination of William Shields

📄 Further redirect examination of William Shields — Thursday, June 22, 1995

Address:

C:\DEPT103\CRIMINAL\1995\JUN\22\FURTHER-REDIRECT-EXAMINATION-O.DOC

TRIAL

▲ Day 101 of 167

◀ Recross-examination of William Shields Motion: DNA statistical evidence ▶

Witness: Dr. William Shields
Examiner: William Thompson
Called by: Defense • Date: Thursday, June 22, 1995 • Lines: 12

In a brief further redirect examination, William Thompson asks Dr. William Shields to confirm that Dr. Evett, described as a British statistician and forensic scientist whose article Dr. Weir said his approach was based on, advocates communicating likelihood ratios to juries but not presenting them as numbers. Lance A. Ito then asks how they would be communicated, and Shields says Evett uses descriptive evidence-strength terms.

# 1 MR. THOMPSON:

One question.

# 2 THE COURT:

Sure.

FURTHER REDIRECT EXAMINATION BY MR. THOMPSON

# 3 MR. THOMPSON:

Now, Dr. Weir said his approach was based on an article by ion Evett, who is a British statistician and forensic scientist?

# 4 DR. SHIELDS:

That's correct.

# 5 MR. THOMPSON:

Do you know whether Dr. Evett advocates the use of likelihood ratios to communicate with juries or not?

KEY QUOTE

# 6 DR. SHIELDS:

He does.

# 7 MR. THOMPSON:

Does he advocate presenting likelihood ratios as numbers?

# 8 DR. SHIELDS:

No.

# 9 MR. THOMPSON:

Okay. Thank you.

# 10 THE COURT:

Well, if you're not going to do it as a number, how are you going to do it?

KEY QUOTE

# 11 DR. SHIELDS:

He uses words like "Strong evidence, extremely strong evidence, mild evidence, bad evidence."

KEY QUOTE

# 12 THE COURT:

All right. Thank you. Any other witnesses, Mr. Thompson?

Temperature

procedural

Key Quotes (3)

William Thompson

Do you know whether Dr. Evett advocates the use of likelihood ratios to communicate with juries or not?

Establishes that Dr. Evett advocates using likelihood ratios to communicate with juries.

Lance A. Ito

Well, if you're not going to do it as a number, how are you going to do it?

The court asks how likelihood ratios would be presented if not as a number.

Dr. William Shields

He uses words like "Strong evidence, extremely strong evidence, mild evidence, bad evidence."

Describes Evett's verbal evidence-strength categories as an alternative to presenting likelihood ratios numerically.

Evidence (1)

Informal

Article by Dr. Evett, described as a British statistician and forensic scientist, on which Dr. Weir said his approach was based; the discussion concerned Evett's use of likelihood ratios to communicate with juries

discussed

Notable Exchanges (1)

Lance A. Ito•Dr. William Shields

After Thompson finishes his brief redirect, the court asks Shields how likelihood ratios would be conveyed to jurors if not expressed as a number, prompting Shields to describe Evett's verbal evidence-strength categories.

technical

Objections

None recorded

Proceeding 6520 • 12 lines • Defense witness

Criminal Trial

Department 103