The specific methods to attack a forensic witness start with visual examination of the witness. Experienced counsel pays special attention to body language. Typical tip-off signs that the witness may be uncomfortable and insecure include:

• A frequent hand to the mouth or face.
• Complexion flush.
• Fidgeting.
• Facial tics.
• Toying with ear, hair or clothing.
• Dilating pupils.
• A nervous finger or foot tap.

The expert must develop an awareness of these behaviors and control them. As the frequency and degree of insecure behavior increases, so will the pace and force of the cross-examination.

Experienced cross-examiners will look for the witness who is out of control or who gets angry, flustered, or makes the vain effort of trying to locate documents in a file while trying to answer questions.

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