please write 350-500 words to discuss reliability and validity and its impact on knowledge.

Read article through these link:

https://opentextbc.ca/researchmethods/chapter/practical-strategies-for-psychological-measurement/

https://opentextbc.ca/researchmethods/chapter/understanding-psychological-measurement/

https://opentextbc.ca/researchmethods/chapter/reliability-and-validity-of-measurement/