Tier 1 Services    review of records, research, correspondence and consultation Tier 2 Services    psychological and neuropsychological evaluation, including diagnostic interviewing, mental status examination,             and administration of relevant tests Tier 3 Services    formal reports, interrogatories, and other written pretrial work products Tier 4 Services    deposition and trial related preparation and testimony Travel Expenses    required travel is billed at the Tier 1 rate plus substantive incidental expenses (e.g., air fare, hotel accomodations)