A symposium on metacognition in sport will form part of the ICOT series to be held in QUB, Belfast, Ireland, in June 2011. The symposium entitled "METACOGNITION IN SPORT: 3, 2, 1...WHAT DO WE KNOW?"brings together research on metacognition and action, focusing on meta-attention, meta-imagery and psychological skills training. The series of presentations represent a collaboration from several institutions across the island of Ireland and in the UK. The researchers include Professor Aidan Moran (UCD), Professor Craig Mahoney (HEA), Dr. David Foster (Grantham College), P.J. Smyth and Mark Campbell (University of Limerick), Derek Dorris (University College Cork) and Tadhg MacIntyre and Ciaran Kelly (University of Ulster). The abstract for the symposium follows: While the topic of metacognition has largely been neglected by researchers in sport and action, recent innovations have led to the genesis of this field of research (Augustyn & Rosenbaum, 2005). In paper 1, the reasons for the neglect of the topic of metacognition are examined. The emergence of the field of motorcognition (Jeannerod, 2006) and the establishment of the expertise paradigm (Ericsson et al., 1993) are seen as key factors in researchers interest in metacognitive processes. Paper 2, focuses on meta-attention, quite simply, relates to ones understanding or awareness of the processes of attention. Recent research on the quiet eye phenomenon (Vickers, 2007), motor planning and visual search in golf (Campbell, 2006) are examined. Next Paper 3 looks at meta-imagery and how despite over a Century of imagery tests only recently have attempts to assess meta-imagery been reported. The potential development of new instruments to measure meta-imagery are discussed. Finally, paper 4 explains how psychological skills training (P.S.T.) is essentially a metacognitive endeavour. A framework for the development of PST is outline andproblems with engagement in PST will be examined from a metacognitive perspective.