Confirmation is the concept that deals with the finance section and is related to it by an additional indicator in order to justify the trend that is suggested by the indicator. However, the technical indicators are not the accurate one which can predict the future movements of price.
On the other hand, a definite trader ensures more security and safety in order to response against more than one number of signals sent by different indicators but when the nature of the signals is same. This case is known as divergence in which conflicting signals are sent by different indicators.
When the investors are looking for a confirmation against a signal, they should be aware of confirmation bias which has the little tendency to place the greater memory for information assimilation by allowing those which matches with the preconceived notions and by discarding those which clashes with the preconceived notions.