Delusional motivation of violence is rare, but a moderate risk exists that delusions will motivate violence at some time during the course of a violent patient's illness.

No abstract

Research has demonstrated a relation between sensation seeking and risky behavior as well as an association between risky behavior and the occurrence of head injury. This study assessed sensation seeking in young adults with and without a history of head injury by administration of the Sensation Seeking Scale (SSS), the Driver Risk Index (DRI), and the MacAndrews Scale of the Minnesota Multiphasic Personality Inventory (MMPI). There was a significant difference between the groups for the Thrill and Adventure Seeking Subscale of the SSS and the MacAndrews Scale of the MMPI, with head-injured participants scoring higher. Gender differences were seen in both groups for subscales of the SSS, with men scoring higher. Significant correlations were found for head-injured participants between the DRI and the Boredom Susceptiblity Subscale of the SSS, suggesting that as knowledge of risk increased for these participants, so did their preferences for risky behaviors. However, non-head-injured participants indicated a lower interest in risky behaviors as their knowledge of risk increased.

Research has shown that individuals who have sustained mild head injury demonstrate a slowed speed of processing that is exacerbated by fatigue/stress. We administered the Paced Auditory Serial Addition Test (PASAT) at the beginning and at the end of a 4-h experimental protocol to determine whether fatigue or a stressor would result in poorer scores for individuals who had previously sustained mild head injury. A significant improvement was found between the first and second administration for both head-injured and control subjects, but difference scores revealed a significant between-groups difference for the first of the four trials, with the head-injured participants performing worse than controls. Apparently, head-injured participants were slower to develop, as well as slower to regain, a means of efficiently processing rapidly presented information.

Head injuries are frequent occurrences, and the majority are considered mild Most epidemiological studies have used hospitalized cases, and, as a result, those who sustain a head injury but do not receive intensive medical attention are not considered It can be assumed that those not receiving medical attention most likely sustained mild head injuries A few researchers have examined self-reported head injury, but the data is still limited Little is known about those individuals who incur head trauma and resume normal functioning without treatment The purpose of this study was to identify and describe the epidemiological correlates of head injury within a young high functioning population The present study examined head injury and its associated factors in a college sample, which included such areas as demographics, nature of head injury, and prevalence of postconcussion symptoms.