advantages and disadvantages of observation studies relative to surveys

/in /by

What are the advantages and disadvantages of observation studies relative to surveys? (Cite and reference).

Note:

  1. Need at least 2 paragraphs.
  2. Need at least 1 peer-reviewed article as the reference. (Article from Proquest is most preferable)
  3. Text book information:

https://books.google.com/books?id=veM4gQPnWHgC&printsec=frontcover&source=gbs_atb#v=onepage&q&f=fals