“…However, this picture is based on only a few studies, and further research is required to provide a better understanding of the problem. indeed, with no consensus among researchers, studies to date have differed in terms of the emphasis placed upon methodological issues such as the time-reference period for the events to have happened within (e.g., previous week, previous two months, previous year), and whether or not questionnaires were used that would allow for international comparisons (Callaghan & joseph, 1995;Collins & bell, 1996;Collins, Mc Aleavy, & Adamson, 2002, 2004Grant, 1996;Livesey, Mc Aleavy, donegan, duffy, o'Hagan, Adamson, & White, 2007;Taylor, 1996). of note has been the robust methodological approach taken by of Collins et al (2002Collins et al ( , 2004.…”