The right hemisphere is primary in the following ways:
- the primacy of vigilant attention – broad scanning attention is prior to narrow focused attention;
- the primacy of wholeness – "the right hemisphere deals with the world before separation, division, analysis has transformed it into something else, before the left hemisphere has re-presented it. It is not that the right hemisphere connects – because what it reveals was never separated; it does not synthesise – what was never broken down into parts; it does not integrate – what was never less than whole." (The Master and His Emissary, Iain McGilchrist, 2009; page 179);
- the primacy of experience – the right hemisphere must become aware of something's presence before the left hemisphere can re-present it;
- the primacy of means – the embodied version of tools and language is the most meaningful version of those two instruments.