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Educing Information: Interrogation - National Intelligence University

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• General cognitive slowing (Dinges and Kribbs, 1991)<br />

• Impaired attention (Hockey, 1970; Norton, 1970)<br />

• Diminished concentration (Williams, Lubin, and Goodnow, 1959)<br />

• Impairment in cognitive functions associated with right anterior<br />

hemisphere or subcortical areas such as motor, rhythm, receptive and<br />

expressive speech, memory, and complex verbal arithmetic functions<br />

(Kim et al., 2001)<br />

• Impaired decisionmaking involving the unexpected, innovation,<br />

revising plans, competing distractions, and effective communication<br />

(Harrison and Horne, 2000)<br />

• Reduced capacity for logical and sequential thought (Blagrove,<br />

Alexander, and Horne, 1995; Horne, 1988b; Williams and Lubin, 1967)<br />

• Decreased accuracy in time estimation, and both immediate and<br />

delayed recall (Taylor and McFatter, 2003)<br />

• Negative effects on mood (Lieberman et al., 2002)<br />

• Alteration of the body’s immune system (Everson, 1997)<br />

• Increased perception of physical pain (hyperalgesia) (Kundermann et<br />

al., 2004)<br />

• Decreased motivation (Wilkinson, 1961, 1964; Horne and Pettitt, 1985;<br />

Meddis, 1977)<br />

• Increased suggestibility (Blagrove, Cole-Morgan, and Lambe, 1994;<br />

Blagrove, 1996).<br />

On this last point it is worth noting that suggestibility increases specifically<br />

under conditions simulating an interrogation. At least one study has found that<br />

“the effect on suggestibility of one or two night’s sleep loss is comparable to the<br />

difference in suggestibility between true and false confessors.” (Blagrove, 1996,<br />

p. 57)<br />

Sensory Deprivation<br />

Sensory deprivation is associated with:<br />

• Impairment in higher mental functions and complex intellectual tasks<br />

(Myers, Murphy, Smith, and Goffard, 1966; Kitamura, 1967)<br />

• Increased susceptibility to influence (under some conditions) (Myers et<br />

al., 1966)<br />

• Heightened hypnotic susceptibility (Sanders and Reyher, 1969)<br />

• Diminished EEG activity correlated with apathetic, lethargic behavior,<br />

and a reduction in stimulation seeking behavior (Scott and Gendreau,<br />

1969)<br />

• Behaving in a way that is more boring and unlikable (Zuckerman et al.,<br />

1970)<br />

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