Introduction -- The impact of health on performance / John Harrison and John Sterland -- A perspective on stress and depression / Jenny Firth-Cozens -- Misuse of drugs and alcohol / Hamid Ghodse and Susanna Galea -- Cognitive impairment and performance / Kirstie Gibson, Luke Kartsounis and Michael Kopelman -- Are psychological factors linked to performance? / Jenny Firth-Cozens and Jennifer King -- The role of education and training / Elisabeth Paice -- The impact of culture and climate in healthcare organisations / Michael West and Marion Spendlove -- The influence of team working / Michael West and Carol Borrill -- Leadership and the quality of healthcare / Jenny Firth-Cozens -- Workload, sleep loss and shift work / Lawrence Smith -- Conclusions.