Human judgement theory does not purport to penetrate the 'black box' of cognitive processing. Verbal protocol research, however, has that ability. What are the strengths and weaknesses of this research methodology? (Hint: See GF Klersey and TJ Mock, 'Verbal protocol research in auditing, Accounting, Organizations and Society, vol. 14, no. 1/2, 1989, pp. 133-51.)

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