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One in 200 workers had suffered a major injury following a violent attack during the previous year and a further one in ten needed first aid following an assault. Other surveys also showed high risks: of sodal service staff, 6% had suffered an attack in the past 5 years (Saunders, 1987), and sodal workers were at even high er risk.

Psychologists need to know about statistics but they can easily get bogged down in unfamiliar jargon. This new dictionary is an invaluable reference for all undergraduate and postgraduate students of psychology. It provides definitions of the statistical terms most commonly encountered in psychological literature.