The aim of this study was to conduct an empirical investigation of the validity of Jacobs' (in J Gambl Behav 2:15-31, 1986) general theory of addictions in relation to gambling problems associated with electronic gaming machines (EGM). Regular EGM gamblers (n = 190) completed a series of standardised measures relating to psychological and physiological vulnerability, substance use, dissociative experiences, early childhood trauma and abuse and problem gambling (the Problem Gambling Severity Index). Statistical analysis using structural equation modelling revealed clear relationships between childhood trauma and life stressors and psychological vulnerability, dissociative-like experiences and problem gambling. These findings confirm and extend a previous model validated by Gupta and Derevensky (in J Gambl Stud 14: 17-49, 1998) using an adolescent population. The significance of these findings are discussed for existing pathway models of problem gambling, for Jacobs' theory, and for clinicians engaged in assessment and intervention.
The purpose of this study is to examine the costs of replacing high school principals. The technique for cost estimation used is the ‘ingredients method’ and is based on the economic principle of opportunity cost. It is the recommended form of cost analysis by experts in the field. Within this study, the ingredients method systematically identifies all the resources required to replace high school principals, and attaches prices to each of those ingredients. The systematic nature of the method allows for costs to be measured and compared across studies. Data were obtained from executive-level human resource management across six South Carolina public school districts. Costs of high school replacement varied by district (ranging from $10,413.03 to $51,659.27), with the sample average equating to $23,974.29. The methodology used in this study can be replicated across the globe to estimate the cost of replacing school leaders.
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