How do you increase a child's concentration level? Will it decrease during a leap?

If you know what your baby is really interested in, it stimulates his or her natural concentration level; people concentrate when they are actually interested. When a baby is in the fussy phase, their interest level may be down for a while as they simply need their energy to get used to this whole new level op perception. When the fussy phase is over and he starts to be interested in developing new skills you would make yourself useful to help him develop these skills, and thus be able to understand what skills your baby wants to develop. If you hit the right button, concentration will come naturally. Yet… don’t forget: baby’s can’t concentrate as long as older kids!