Emotions are mental states that arise spontaneously rather than through conscious effort. Changes in underlying physiology, facial expression, or even actions can accompany these emotions. A specific event, or series of events, that either cause the person to succeed or fail in reaching their goal(s) can trigger intense emotions.
Sittig et al. performed a secondary analysis of several previously collected qualitative data sets. They found that the implementation and use of CPOE systems provoked examples of positive, negative, and neutral emotions. They found that negative emotional responses were the most prevalent, by far, in all of their interviews and observations. 
They concluded that if designers and clinical information system (CIS) implementers fail to recognize that various CPOE features and implementation strategies can increase clinicians’ negative emotions, then the systems may fail to become a routine part of the clinical care delivery process.  They believe that CIS developers might be able to alleviate some of these problems by designing positive feedback mechanisms, for both the systems and the organizations, although this is a hypothesis that requires further testing.
- Sittig DF, Krall M, Kaalaas-Sittig J, Ash JS. Emotional Aspects of Computer-based Provider Order Entry: A Qualitative Study]. J Am Med Inform Assoc. 2005 May 19. http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=15905478&query_hl=6