(a)     NRT covers a large domain of learning tasks, with a few items measuring each specific task. 
(b)     NRT emphasizes discrimination among individuals in terms of relative level of learning. 
(c)     NRT favours items of average difficulty and minimal number of easy and difficult items. 
(d)     NRT requires a clearly defined group. 
 (e)     NRT emphasizes the performance on learning tasks with a reference group. 
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