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Specialized units for the assessment and management of concerning behaviors towards public figures have been set up in various jurisdictions. Their efficacy has been demonstrated descriptively and in terms of reduction in concern rates. This study of 100 consecutive cases from the Fixated Threat Assessment Centre (FTAC) in the UK uses a novel measure of outcome in the form of reduction in behaviors of concern and in police call-outs/stops, using data culled from police and health service records. It adopts a mirrored design, comparing individuals over 12-month and 2-year periods before and after FTAC intervention. It demonstrates significant reductions in both numbers of individuals involved in, and number of actual incidents of, concerning communication and problematic approach, as well as police call-outs/stops. Most results are consistent across subgroups with regard to gender, previous convictions, concern level, compulsory hospitalization and grievance-driven behavior. Such threat assessment units reduce risky behavior and save police time and, possibly, costs. Copyright © 2016 John Wiley & Sons, Ltd., (Copyright © 2016 John Wiley & Sons, Ltd.)

Study of risk factors for violence to prominent people is difficult because of low base rates. This study of harassers of the royal family examined factors suggested in the literature as proxies for violence--breaching security barriers, achieving proximity, approach with a weapon, and approach with homicidal ideation. A stratified sample of different types of approach behaviour was randomly extracted from 2,332 Royalty Protection Police files, which had been divided into behavioural types. The final sample size was 275. Significant differences in illness symptomatology and motivation were found for each proxy group. Querulants were significantly over-represented in three of the four groups. There was generally little overlap between the proxy groups. There is no evidence of the proxy items examined being part of a "pathway to violence". Different motivations may be associated with different patterns of risk. Risk assessment must incorporate knowledge of the interactions between motivation, mental state, and behaviour., (Copyright © 2010 John Wiley & Sons, Ltd.)