Deficits in Miranda Comprehension and Reasoning: The Effects of Substance Use and Attention Deficits.

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Each year, an estimated 318,000 defendants who do not comprehend the Miranda warnings waive their rights and provide incriminating evidence without the protection of counsel (Rogers, 2008), which make Miranda-related competencies one of the most pervasive pretrial issues. A wide range of issues could potentially affect an individual's capacity to provide a knowing and intelligent waiver. Previous Miranda research has focused narrowly on the effects of cognitive and developmental factors. The current study added to the Miranda literature by examining the impact of two highly prevalent conditions found in correctional populations, attention deficits and substance abuse. Adult defendants in custody ... continued below

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Hazelwood, Lisa L. August 2009.

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  • Hazelwood, Lisa L.

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Each year, an estimated 318,000 defendants who do not comprehend the Miranda warnings waive their rights and provide incriminating evidence without the protection of counsel (Rogers, 2008), which make Miranda-related competencies one of the most pervasive pretrial issues. A wide range of issues could potentially affect an individual's capacity to provide a knowing and intelligent waiver. Previous Miranda research has focused narrowly on the effects of cognitive and developmental factors. The current study added to the Miranda literature by examining the impact of two highly prevalent conditions found in correctional populations, attention deficits and substance abuse. Adult defendants in custody (N = 118) were evaluated within 36 hours of arrest in order to assess both chronic psychological disorders and situational variables. Results indicate that attention deficits have a significant impact on defendants' ability to provide a knowing Miranda waiver, whereas substance use profoundly affected their reasoning about Miranda waiver decisions. This study represents the first systematic investigation of the effect of transient mental states on Miranda-related abilities with criminal defendants. Important implications for forensic practice are addressed.

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  • August 2009

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  • March 17, 2010, 11:40 a.m.

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  • March 20, 2017, 2:42 p.m.

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Hazelwood, Lisa L. Deficits in Miranda Comprehension and Reasoning: The Effects of Substance Use and Attention Deficits., dissertation, August 2009; Denton, Texas. (digital.library.unt.edu/ark:/67531/metadc12132/: accessed July 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .