Internal evidence and external criteria


     

Evaluation: the making of judgments about the value,   for some purpose, of ideas, works, solutions, methods, material, etc.

Judgments in terms of internal evidence: Evaluation   of a communication from such evidence as logical accuracy, consistency, and   other internal criteria. 

 Judgments in terms of external criteria: Knows the   criteria customarily employed and the skill to apply them in evaluating works   or ideas.