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Decision conflict attenuates due to learning which is often indicated by and therefore confounded with the receipt of increasingly frequent positive and decreasingly frequent negative feedback . Standards should have a clearly defined scope and there should be few , if any , exceptions ( e.g ., for certain industries ) . SSA only issues such an SSN when 1 ) a Federal statute or regulation requires an SSN to receive a particular benefit or service , which an alien has otherwise established entitlement ; or 2 ) a State or local law requires an SSN to get public assistance benefits , to which the alien has otherwise established entitlement and for which all other requirements have been met . In the gray of the dawn the sharp-shooters were deep in their deadly game ; as the sun came up , one battery after another opened fire , and was instantly and gallantly answered ; and all the time behind the hidden sharpshooters , and behind the skirmishers , who occasionally stopped to take a hand in the fray , the regiments marched , route-step , colors flying , after their colonels .