1.) Messick (1995) suggested that the traditional view of the construct is fragmented and proposed a unified and expanded concept of construct validity: Briefly describe the problems that he identified with the traditional view of construct validity. (Note that you will first need to briefly describe the traditional view.) 

2.) Identify and fully describe four (4) of the six aspects of Messick’s view of construct validity, that highlight the central issues he identified. 

3.) Finally, describe Messick s (1995) unified validity framework and its four classification types (i.e., the progressive matrix). Using examples is helpful.

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