Biology
Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 39.5, Problem 1CT
Summary Introduction

To determine: The level of accuracy that would be required to allow fMRI as evidence in the courtroom.

Introduction: Functional magnetic resonance imaging (fMRI) is used to detect the brain activity at particular regions based on the generation of blood flow and its response to the magnetic field.

Summary Introduction

To determine: In case the accuracy is achieved, would it be used in lie detection for criminal defendants.

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A researcher has designed a card choice task to better understand altered decision making in a group of patients who have sustained damage to their ventromedial prefrontal cortex (compared to a non-damaged control group). Participants complete 120 trials. On each trial they choose to flip over a card from one of two decks of face down cards labeled deck 1 and deck 2. Each card flipped over wins or loses an amount of money. In deck 1 (the “bad deck”), 9 out of 10 cards wins $100 but one out of ten cards loses $1250. In deck 2 (the “good deck”), 9 out of 10 cards wins $50 and one out of ten loses $250. The researcher measures the number of choices from the “good deck” versus the “bad deck”, and measures anticipatory skin conductance responses immediately before participants choose from the “good deck” compared to the “bad deck”. The research finds that after experiencing wins and losses from 60 choice trials, control group participants on average begin to choose the “good deck” more…
A researcher has designed a card choice task to better understand altered decision making in a group of patients who have sustained damage to their ventromedial prefrontal cortex (compared to a non-damaged control group). Participants complete 120 trials. On each trial they choose to flip over a card from one of two decks of face down cards labeled deck 1 and deck 2. Each card flipped over wins or loses an amount of money. In deck 1 (the “bad deck”), 9 out of 10 cards wins $100 but one out of ten cards loses $1250. In deck 2 (the “good deck”), 9 out of 10 cards wins $50 and one out of ten loses $250. The researcher measures the number of choices from the “good deck” versus the “bad deck”, and measures anticipatory skin conductance responses immediately before participants choose from the “good deck” compared to the “bad deck”. The research finds that after experiencing wins and losses from 60 choice trials, control group participants on average begin to choose the “good deck” more…
A researcher has designed a card choice task to better understand altered decision making in a group of patients who have sustained damage to their ventromedial prefrontal cortex (compared to a non-damaged control group). Participants complete 120 trials. On each trial they choose to flip over a card from one of two decks of face down cards labeled deck 1 and deck 2. Each card flipped over wins or loses an amount of money. In deck 1 (the “bad deck”), 9 out of 10 cards wins $100 but one out of ten cards loses $1250. In deck 2 (the “good deck”), 9 out of 10 cards wins $50 and one out of ten loses $250. The researcher measures the number of choices from the “good deck” versus the “bad deck”, and measures anticipatory skin conductance responses immediately before participants choose from the “good deck” compared to the “bad deck”. The research finds that after experiencing wins and losses from 60 choice trials, control group participants on average begin to choose the “good deck” more…
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