Validity and reliability

Validity and reliability are primarily quantitative research concepts. Morse, Barrett, Mayan, Olson, and Spiers (2002) argue that their exclusion from qualitative research design undermines the credibility and rigor of qualitative research conclusions. Are they correct in this assertion? Why or why not?

Article has been provided. Response needs to be at least 150 words with a minimum of 1 reference in APA 6th edition format.