A recommended reading that might be useful.

For the purposes of my peer review we have to evaluate the reliability as well as the external and internal validity of the study so I decided to read one of the recommended readings from week 4 called "Determining Validity in Qualitative Inquiry". It's quite useful in defining validity in that they define validity as "how accurately the account represents participants' realities of the social phenomena and is credible to them".  The reading also outlines procedures and strategies for validity ensuring credibility of the study. It talks about validity in the lens and paradigm of the research in general, the use of triangulation to ensure validity, there is also a useful table on page 126 called validity procedures within qualitative lens and paradigm assumptions, collaboration, audit trails, and peer debriefing among other procedures to ensure validity. Just though you all may want to check it out.