“…In four articles no effects were found ( Jeon et al , 2015 ; Marotta, 2010 ; Olinger, 2010 ; Westerberg and Tafvelin, 2014 ). Four papers conclude that relationship-oriented leadership results in a higher quality of care ( Castle and Decker, 2011 ; Harvath et al , 2008 ; McKinney et al , 2016 ; Westerberg and Tafvelin, 2014 ), while in one article it is concluded that a combination of task-oriented and relationship-oriented leadership leads to a higher quality of care (with the emphasis on task-oriented leadership) ( Jennings et al , 2011 ). Based on their study in Sweden, Westerberg and Tafvelin (2014) present an indirect positive relationship between transformational leadership and quality of care, via mediating variables such as organizational support, support by experienced colleagues, workload and control ( Westerberg and Tafvelin, 2014 ).…”