number of respondents questions + No need for interviewers Fear about lack of confidentiality – + Convenient for respondents Lower response rates may threaten – representativeness + Allows for anonymity with sensitive questions Risk of incomplete data – Reading and language barriers – Uncertainty about who is – responding Respondent may consult other – sources (e.g., Internet, colleagues) before responding; however, this may not be a bad thing if you are looking for facts, not opinions which sometimes may be required Surveys: Internet + Able to obtain data on large Needs cognitive testing to minimize – numbers of respondents the risk of participants misinterpreting the meaning of the + No need for interviewers questions + Less expensive Non-response bias – + Convenient for respondents Often requires knowledge of the – + Speedy Web + Able to have automated data Requires computer literacy – entry and results reporting (e.g., Barriers may exist pertaining to – aggregated statistics) language and physical disabilities Respondent may consult other – sources (e.g., Internet, colleagues) before responding; however, this may not be a bad thing if you are looking for facts, not opinions
number of respondents + No need for interviewers + Convenient for respondents + Allows for anonymity with sensitive questions questions – Fear about lack of confidentiality – Lower response rates may threaten representativeness – Risk of incomplete data – Reading and language barriers – Uncertainty about who is responding – Respondent may consult other sources (e.g., Internet, colleagues) before responding; however, this may not be a bad thing if you are looking for facts, not opinions which sometimes may be required Surveys: Internet + Able to obtain data on large numbers of respondents + No need for interviewers + Less expensive + Convenient for respondents + Speedy + Able to have automated data entry and results reporting (e.g., aggregated statistics) – Needs cognitive testing to minimize the risk of participants misinterpreting the meaning of the questions – Non-response bias – Often requires knowledge of the Web – Requires computer literacy – Barriers may exist pertaining to language and physical disabilities – Respondent may consult other sources (e.g., Internet, colleagues) before responding; however, this may not be a bad thing if you are looking for facts, not opinions
pe_btb_mod4_handouts_final_06162014.docx