8.2: Critical Thinking
- Page ID
- 35673
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\(\newcommand{\avec}{\mathbf a}\) \(\newcommand{\bvec}{\mathbf b}\) \(\newcommand{\cvec}{\mathbf c}\) \(\newcommand{\dvec}{\mathbf d}\) \(\newcommand{\dtil}{\widetilde{\mathbf d}}\) \(\newcommand{\evec}{\mathbf e}\) \(\newcommand{\fvec}{\mathbf f}\) \(\newcommand{\nvec}{\mathbf n}\) \(\newcommand{\pvec}{\mathbf p}\) \(\newcommand{\qvec}{\mathbf q}\) \(\newcommand{\svec}{\mathbf s}\) \(\newcommand{\tvec}{\mathbf t}\) \(\newcommand{\uvec}{\mathbf u}\) \(\newcommand{\vvec}{\mathbf v}\) \(\newcommand{\wvec}{\mathbf w}\) \(\newcommand{\xvec}{\mathbf x}\) \(\newcommand{\yvec}{\mathbf y}\) \(\newcommand{\zvec}{\mathbf z}\) \(\newcommand{\rvec}{\mathbf r}\) \(\newcommand{\mvec}{\mathbf m}\) \(\newcommand{\zerovec}{\mathbf 0}\) \(\newcommand{\onevec}{\mathbf 1}\) \(\newcommand{\real}{\mathbb R}\) \(\newcommand{\twovec}[2]{\left[\begin{array}{r}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\ctwovec}[2]{\left[\begin{array}{c}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\threevec}[3]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\cthreevec}[3]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\fourvec}[4]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\cfourvec}[4]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\fivevec}[5]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\cfivevec}[5]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\mattwo}[4]{\left[\begin{array}{rr}#1 \amp #2 \\ #3 \amp #4 \\ \end{array}\right]}\) \(\newcommand{\laspan}[1]{\text{Span}\{#1\}}\) \(\newcommand{\bcal}{\cal B}\) \(\newcommand{\ccal}{\cal C}\) \(\newcommand{\scal}{\cal S}\) \(\newcommand{\wcal}{\cal W}\) \(\newcommand{\ecal}{\cal E}\) \(\newcommand{\coords}[2]{\left\{#1\right\}_{#2}}\) \(\newcommand{\gray}[1]{\color{gray}{#1}}\) \(\newcommand{\lgray}[1]{\color{lightgray}{#1}}\) \(\newcommand{\rank}{\operatorname{rank}}\) \(\newcommand{\row}{\text{Row}}\) \(\newcommand{\col}{\text{Col}}\) \(\renewcommand{\row}{\text{Row}}\) \(\newcommand{\nul}{\text{Nul}}\) \(\newcommand{\var}{\text{Var}}\) \(\newcommand{\corr}{\text{corr}}\) \(\newcommand{\len}[1]{\left|#1\right|}\) \(\newcommand{\bbar}{\overline{\bvec}}\) \(\newcommand{\bhat}{\widehat{\bvec}}\) \(\newcommand{\bperp}{\bvec^\perp}\) \(\newcommand{\xhat}{\widehat{\xvec}}\) \(\newcommand{\vhat}{\widehat{\vvec}}\) \(\newcommand{\uhat}{\widehat{\uvec}}\) \(\newcommand{\what}{\widehat{\wvec}}\) \(\newcommand{\Sighat}{\widehat{\Sigma}}\) \(\newcommand{\lt}{<}\) \(\newcommand{\gt}{>}\) \(\newcommand{\amp}{&}\) \(\definecolor{fillinmathshade}{gray}{0.9}\)- After watching the interrogation of the kayak murder suspect, identify any concerns you have about the manner the interrogation was conducted.
- You are interrogating a suspect; he offers an explanation that he was involved but did not commit the murder you are investigating. The suspect is providing an alternate explanation of the evidence. As the investigator, what are the ways/techniques you can use to get the suspect provide incriminating evidence of guilt?
- In this critical thinking exercise, you are interviewing three suspects. They have all plead guilty to the crime. Do you accept their confession?
- Bill is a 45-year-old man. He works at his family’s gas station and likes to build models. He always wanted to be a police officer, but was unable to pass the written exam. He has an IQ of 70. After a recent murder occurred near the family gas station, officers began questioning him. Bill was very eager to discuss his day and wanted to be helpful in the officer’s investigation. Soon he starts offering explanations on the killer’s motives. Some of Bill’s statements align with the evidence, others do not. Bill is arrested and taken to the police station for interrogation at which time he confesses to the murder. Could this be a false confession? If so, what type?
- Stacy is the mother of a 17-year-old son named Steven. She has been in long-term abusive relationship with Kevin. Kevin was murdered by gunshot at point blank range. There are both separated and questioned. Stacy confesses to murdering Kevin, Steven denies murdering Kevin. However, gunshot residue conducted on both Stacy and Steven reveal no residue on Stacy’s person, Steven has slight gunshot residue on his shirt, but none on his hands. Stacy was also at work at the time. Stacy is adamite she was the one who killed Kevin. Could this be a false confession? If so, what type?
- There was a recent shooting in a high crime area know for gang activity. A 12-year-old girl is killed by a 40-caliber bullet. During the investigation, you stop a car containing 3 suspects, Tamera, a female age 21, her 25-year-old boyfriend Carl, and Tamera’s 15-year-old brother Phillip. Located in the car is a 40 caliber Glock handgun. Just before you approach the car, you see Tamera say something in Phillip’s ear. You were unable to hear what was said, but see Phillip nod his head and look down. All three suspects are separated and questioned. Tamera and Carl deny shooting the gun. Phillip immediately confesses to shooting the gun that killed the 12-year-old girl. Could this be a false confession? If so, what type?
- You are investigating a crime and one of the suspects is a 14-year-old girl. Knowing the requirements for interrogating a juvenile. What is the first thing you need to do to ensure the evidence/testimony collected is admissible. How would you determine if she understood her rights to remain silent? What questions would you ask her?