Irish dance (typically the top half of dancers graded after the first two rounds) of dancers are invited back to perform. The Céilí dances used in competitions are more precise versions of those danced in less formal settings. There is a list of 30 Céilí dances which have been standardised and published in An Coimisiún's "Ar Rinncidhe Foirne" as examples of typical Irish folk dances; these are called the "book" dances by competitive stepdancers. Most Irish dancing competitions only ask for a short piece of any given dance, in the interests of time. There are two types of shoes; soft shoes (also
Search activity concept Search activity concept Search activity concept (SAC) is a psychophysiological concept that integrates subject’s behavior, resistance to stress and deteriorating factors, pathogenetic mechanisms of different mental and psychosomatic disorders, REM sleep functions, brain monoamines activity and brain laterality. The term SAC was coined during the 1970s by V.S. Rotenberg together with V.V. Arshavsky on the basis of the physiological investigations on humans and animals according to the role of different forms of behaviour in body resistance to stress and diseases. SAC distinguishes the following types of behaviour: All forms of behaviour that contain SA belong to coping and increase the