▁at ▁the ▁Indiana ▁University ▁Medical ▁Center ). ▁A ▁major ▁aim ▁of ▁admin ister ing ▁the ▁H R NB ▁to ▁patients ▁was ▁if ▁possible ▁to ▁later al ize ▁a ▁les ion ▁to ▁either ▁the ▁left ▁or ▁right ▁c ere br al ▁hem is phere ▁by ▁comparing ▁the ▁function ing ▁on ▁the ▁both ▁sides ▁of ▁the ▁body ▁on ▁a ▁variety ▁of ▁tests ▁such ▁as ▁the ▁Supp ression ▁or ▁S ens ory ▁Imper ception ▁Test , ▁the ▁F inger ▁Ag nos ia ▁Test , ▁F inger ▁T ip ▁Writing , ▁the ▁F inger ▁T apping ▁Test , ▁and ▁the ▁T actual ▁Performance ▁Test . ▁One ▁difficulty ▁with ▁the ▁H R NB ▁was ▁its ▁excess ive ▁administration ▁time ▁( up ▁to ▁ 3 ▁hours ▁or ▁more ▁in ▁some ▁brain - in j ured ▁patients ). ▁In ▁particular , ▁administration ▁of ▁the ▁Hal st ead ▁Category ▁Test ▁was ▁length y , ▁so ▁subsequent ▁attempts ▁were ▁made ▁to ▁construct ▁reliable ▁and ▁valid ▁short - forms . ▁ ▁In cluded ▁ ▁The ▁H R NB ▁includes : ▁We chs ler ▁Int elligence ▁Sc ale ▁A phas ia ▁Screen ing ▁Test ▁Tra il - M aking ▁Test , ▁parts ▁A ▁and ▁B ▁( me asures ▁time ▁to ▁connect ▁a ▁sequence ▁of ▁numbers ▁( Tra il - M aking , ▁Part ▁A ) ▁or ▁altern ating ▁numbers ▁and ▁letters ▁( Tra il - M aking , ▁Part ▁B ). ▁Hal st ead ▁Category ▁Test ▁( a ▁test ▁of ▁abstract ▁concept ▁learning ▁ability — com pr ising ▁seven ▁sub tests ▁which ▁form ▁several