Abstract: The last twenty years, particularly the early 1990s, ushered in major mental health sector reforms inclusive of deinstitutionalisation policies and subsequent development of community services. Concurrent changes to student nurses' education left registered nurses as the workforce mainstay on inpatient units. However, the author suggests, an emerging global shortage of nurses and implementation of the Employment Contracts Act (1991) negatively impacted on recruitment and retention of registered nurses. Inpatient nurses either left nursing or moved to community positions for better money and increased job status. The author suggests that, as a consequence, the 'critical mass' of experienced and skilled nurses who traditionally provided nursing leadership disappeared resulting in compromised standards of care for patients. As the manager of an inpatient unit, the author proposed the establishment of advanced nursing practice roles as one initiative to provide nursing leadership in order to attract and retain nurses. This study explored five inpatient nurses' perceptions of advanced practice and whether these roles could assist to provide leadership and improve standards of care. The research was a qualitative exploratory descriptive study using a focus group interview as the data collection method. A thematic analysis of the group discussion transcription revealed three key themes: 1) the 'makeup' of advanced nursing practice, 2) moving forwards: establishing roles, 3) moving sideways: barriers to role development. The themes are critically discussed in relation to selected literature. The thesis includes recommendations that could be used by nurses responsible for planning and implementing advanced practice roles on inpatient units.