Critically appraise a qualitative and quantitative research design. Submission I

Critically appraise a qualitative and quantitative research design.
Submission Instructions:
Your initial post should be at least 500 words, formatted and cited in current APA style with support from at least 2 academic sources. Your initial post is worth 8 points.
You should respond to at least two of your peers by extending, refuting/correcting, or adding additional nuance to their posts. Your reply posts are worth 2 points (1 point per response.)
All replies must be constructive and use literature where possible.