Translating the psychobiology of post-traumatic stress disorder into clinically useful analogy.

Psychological theorizing about post-traumatic stress disorder (PTSD) has developed considerably since early behavioural formulations (Brewin, Dalgleish, & Joseph, 1996; Mowrer, 1960) and there have been parallel developments in biological understanding (Yehuda, 1998). However clinical practice has not been affected by the new psychobiology. It is suggested that it is possible to translate this new understanding into a clinically useful analogy that will help circumvent the difficulties of forming a therapeutic alliance with trauma victims which have been reported (Pitman et al., 1991; Scott & Stradling, 1997).

Driving errors, driving violations and accident involvement.

A survey of over 1600 drivers is reported, the results of which are consistent with those reported in an earlier study (Reason et al. 1990), which identified a three-fold typology of aberrant driving behaviours. The first type, lapses, are absent-minded behaviours with consequences mainly for the perpetrator, posing no threat to other road users. The second type, errors, are typically misjudgements and failures of observation that may be hazardous to others. The third type, violations, involve deliberate contraventions of safe driving practice. In the present study the survey instrument used, the Driver Behaviour Questionnaire, was also shown to be reliable over time. Each type of behaviour was found to have different demographic correlates. Most importantly, accident liability was predicted by self-reported tendency to commit violations, but not by tendency to make errors or to have lapses. The implications for road safety are discussed.