Unit 2; Core Studies; Hancock et al

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  • Hancock et al
    • Background: word choice illustrates underlying cognitive & emotional processes
    • IV psychopath or not DV: language used
    • Sample
      • 52 male murderers: 14 psychopaths, 38 non-psychopaths
      • 16% 1st degree, 64% 2nd degree, 20% manslaughter
      • all admitted to crime, avg age 39 years, mean time since crime 10.8yrs
    • Hypotheses: psychopaths will...
      • 1. use more causal language & conjunctions
      • 2. use more semantic references to primary needs
      • 3. use less emotional words & produce more disfluencies
    • Procedure
      • Stage 1: measured psychopathy levels using PCL-R  by trained prison psychs,
      • Stage 2: 25mins to give description of crime, narratives were transcribed
      • Stage 3: transcripts analysed
        • W-matrix tagged word type & semantic concpets
        • Dictionary of affect in language analysed emotional properties
    • Results
      • subordinating conjunctions made up 1.82% of psychos text but 1.54% of non-psychos
        • psychos pre-meditated crimes
      • psychos focused on primary needs; food sex etc, non-psychos on family, religion
      • psychos used 33% more disfluencies
      • psychos used past tense verbs
    • Ethics:broke deception, withdrawal, consent, protection from harm
    • Reliability & Validity
      • IR: 10 random cases were recoded for psychopathy; inter-rater
      • ER: larger sample would give clearer patterns
      • IV: bias reduced as interviewer blind to psych status
      • EV: would criminals redescribe their crimes? only male
    • Ethnocentrism: everyone has an unconscious mind
    • Summary
      • Individual differences: people act on different levels of need
      • Measuring differences: dif in language use
    • Debates: is this useful?
    • Links to psycho-dynamic perspective
      • psychopaths are driven by their id
      • unconscious mind controls language
      • psychopaths distance themselves from their crimes as a defense mechanism

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