Handwritting

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  • Created by: s013693b
  • Created on: 03-05-14 19:56
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  • Documents- Handwritting
    • Children learn to write by copying
      • Adolescence -18 years old a persons writing doesn't change significantly
        • Forensically useful
    • Four types of handwritting
      • Capitals
        • Formation varies
        • When communication is important
      • Cursive
        • Joined up writting
          • Normal form of handwritting
            • Breaks between some letters and words
              • Characteristic to author
      • Signatures
        • Not intended to be legiable
        • Not like normal handwritting
        • Forged
          • Rapidly written, inaccurately proportioned
            • Disguised
          • Slowly written simulations
            • Lack of fluency
            • Proportions normally alike
            • Shaky appearance
            • Pressure of pen greater
            • Mistakes corrected
            • Disguised
      • Disconnected
    • Variation
      • Natural variation
        • Simple random variation
        • Depends on physical state of autor
        • Different writing instument
        • Different writing surface
        • A person handwriting is never identical on two separate occasions
      • A person handwriting is never identical on two separate occasions
    • Less certain than fingerprints and DNA due to natural variation
      • Variation
        • Natural variation
          • Simple random variation
          • Depends on physical state of autor
          • Different writing instument
          • Different writing surface
    • Characteristics
      • Slopes- Left right- No slope
      • Character height
      • Pen movement
        • Low power maginification
          • Analysis
        • Imperfections in ball point pens
          • Areas of low or zero ink density
            • Striations
            • Establish direction of pen movement
      • Ink denisity
    • Analysis

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