Dan Medlock

Date of Award


Document Type


Degree Name

Master Of Arts In Clinical Psychology

Colleges & School

College Of Arts And Sciences

First Advisor

Brad Grunert, PhD

Library of Congress Subject Heading

Post-traumatic stress disorder; Bus drivers; Truck drivers; Bus accidents; Truck accidents; Traffic accidents


Americans live in a highly mobile society driving more than 2.9 trillion highway and road miles in 2008. Unfortunately, the roadways abound with hazards that expose individuals to severe psychological trauma, debilitation and death, not only to the victim, but also to the perpetrator of the incident. The very design of commercial trucks and buses and demanding work conditions placed upon their drivers have found commercial drivers becoming involved in tragic motor vehicle accidents (MVAs). While the commercial drivers often survive accidents with passenger vehicles, those in passenger vehicles have mortality rates of nearly 98%. Studies of post-traumatic stress have focused on the victims of trauma leaving little focus on research for those who cause, either intentionally or unintentionally, a motor vehicle accident (MVA). Nor are there studies to support the precipitating factors that occur just prior to the incident that may later act to exacerbate the traumatic stress of the survivors. This study looks at both of these areas with a specific focus on the visual cue of ―seeing‖ the other driver's face just prior to the accident and the impact of that on anxiety, depression, and the ability of the driver to return to work. This study focuses on 57 commercial truck and bus drivers who survived a motor vehicle accident (MVA) in which the occupant of the other vehicle died from injuries as a result of the motor vehicle accident (MVA) and were then admitted to a level 1-trauma center for the treatment of physical injuries. The study follows them through to the end of treatment for post-traumatic stress disorder (PTSD).


On-Campus Access

OCLC Number