This research was administered with the aim of investigating the role of job characteristics, transformational leadership and goal difficulty
on employees, performance… Research statisti-cal population were the personnel of minerals and industries Holding of Ehya
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This research was administered with the aim of investigating the role of job characteristics, transformational leadership and goal difficulty
on employees, performance… Research statisti-cal population were the personnel of minerals and industries Holding of Ehya Folad Sepahan company in autumn 1388 (2500 persons), which from them, 329 persons was selected using two stage sampling. Research instruments including transformational leadership with 22 items (with four subscales, namely group goals, personal support, intellectual role model and high perfor- mance expectancies), goal difficul-ty with 5 items, job characteristics with 23 items (with 5 subscales, skill variety, task identity, task signi- ficance, autonomy and feedback) and job perfo- formance with 6 items (with three subscales, general performance, technical performance, and interpersonal performance). Data were ana- lyzed with the use of Pearson's correlation cof- ficient and stepwise regression analysis. The results of stepwise regression analysis showed that for prediction of general job performance, goal difficulty, skill variety and high perfor- mance expectancies, for prediction of technical job performance, group goals, goal difficulty and high performance expectancies, for predic- tion of interpersonal job performance, goal difficulty, skill variety and intellectual role model and for prediction of total performance, skill variety, goal difficulty and high perfor- mance expectancies have highest predictive power for prediction respectively (P < 0/01).
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