PR spelled the word 'advise' incorrectly in ALL of her exemplars, both right and left handed. She spelled it 'advize'. The RN author spelled it correctly. If PR wrote the RN, then the question is raised: How did she spell 'advise' in the RN and then later spell 'advize' in her exemplars? There seem to be two choices for RDI. Either she did it on purpose, or she forgot how to spell 'advise' between the time she wrote the RN and the time she did the exemplars.