Kineticist and Caster level of SLA

Do items that increase CL affect the Kineticist’s SLA? They seem to have CL on their SLA as their expanded element states "For wild talents of her element, the kineticist gains a +1 bonus on attack rolls and damage rolls, as well as to caster level and DCs."

How does caster level work in general for Kineticists?