• Selling the report to the other side after the first side decided not to retain the expert.


• Failing to update or keep current the expert's interrogatory responses.


• Failing to disclose all opinions intended to be rendered and required by pretrial order.


• Withholding information obtained during the expert's investigation of the case.


• Destroying evidence during testing (spoliation).


• Volunteering to testify as a "consulting" expert against the side retaining the original expert.


• Switching allegiance and testifying on behalf of the other side.


• Tendering false credentials.


• Rendering a false opinion or report.


• Tendering an opinion based on "vast experience" only, without doing any scientific, technical or professional investigation.


• Being argumentative and telling examining attorney that he is "wrong" or "stupid."


• Generating a long, rambling preamble to every answer.


• Accepting an assignment involving disclosure of confidential information received from the opposite party in an earlier matter.

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