Retrograde Extrapolation
| Author | Deandra M. Grant/Kimberly Griffin Tucker |
| Pages | 369-378 |
8-1
CHAPTER 8
RETROGRADE
EXTRAPOLATION
I. Introduction
§8:01 What Is Retrograde Extrapolation?
§8:02 The Typical Scenario
II. Absorption and Elimination
§8:10 Alcohol Curve
§8:11 Factors Affecting Absorption
§8:12 Rebutting Testimony That Rate of Absorption Is Fixed
§8:13 Elimination Rates
III. The Retrograde Extrapolation Calculation
§8:20 Widmark Equation
§8:21 Minimum Data Needed for Retrograde Extrapolation
§8:22 Using Widmark in Your Own Cases
IV. Embracing Retrograde Evidence
§8:30 Admissibility
§8:31 Each Case Requires Separate Analysis
V. Excluding and Attacking Retrograde Evidence
§8:40 Request a 705 Hearing to Exclude Retrograde Extrapolation
§8:41 Applicable Evidence Rules
§8:42 Cross-Examination Attacking Validity of Retrograde Extrapolation Evidence
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