Answer:
1.Far too much time to reach the respondent (it’s called snail mail for a reason)
2.Mail-in surveys are not guaranteed to be opened, completed and sent back immediately.
3.Hard paper responses are handwritten, which are vulnerable to smudges and smears.
4.Understanding hard paper survey responses is at the mercy of the respondents’ handwriting.
5.Phone interviews are susceptible to participants hanging up, cutting the interview without warning.
