Arcanists have a class feature named Arcane Reservoir
Points from the arcanist reservoir are used to fuel many of the arcanist’s powers. In addition, the arcanist can expend 1 point from her arcane reservoir as a free action whenever she casts an arcanist spell. If she does, she can choose to increase the caster level by 1 or increase the spell’s DC by 1. She can expend no more than 1 point from her reservoir on a given spell in this way.
As you can see from this line
she can choose to increase the caster level by 1
my question now is does this increase in caster level for the spell also increase the caster level bonus for rolls against spell resistance.