Answer to Question 1
ANS: B
The main disadvantage of Internet-based data collection has to do with sampling those who are able to read and write, are computer-literate, and who have Internet access. Thus, the poorly educated, elderly, disabled, or disadvantaged may be underrepresented. Researchers who conduct Internet-based research are often able to obtain consent by noting a statement like Completion and submission of the survey implies consent. Data can be effectively collected for a qualitative study using the Internet. Although there are some sampling limitations in terms of certain populations, the subject pool in general tends to be very large given the extensiveness of the online community not limited by geographic space.
Answer to Question 2
ANS: D
Not being able to ensure that participants meet inclusion criteria and being unable to control distractions during data collection are the biggest threats to the validity and reliability of the research findings gathered by Internet-mediated data collection. A skilled and personable interviewer may be able to establish good rapport and to effectively conduct online interviews with study participants. Use of a pseudonym, as well as site controls, helps ensure that participants' identities are not made public. Plans to carefully capture interviews digitally, note-taking, and careful data transcription minimize problems with transcription of data.