There are 3 elements to i3 brain training: (1) Attention focus and chunking training; (2) Working memory training; (3) Executive function training. In this article we’re looking at the first of these. . Attention Focus & Chunking: Expert Perception Experts in any field differ from novices in their perception. More generally, smarter people have a better ability to quickly learn how to perceive a situation. Perception is an active process: we select and organise the data that bombards our senses using our