Abstract
 In this article I analyse how evidence influences, determines and evaluates belief formation. I deal with the main normative accounts and with constitutive non-normative accounts of the evidential thesis for belief emergence and I finally defend that evidentialism must be understood in constitutive non-normative terms. More specifically, evidentialism must be based on the idea that believers always consider that they have enough evidence for their beliefs. 
 
 Keywords
 Normativity, evidentialism, reasons for belief, wishful thinking, belief emergence