closed-ended- respondents choose from a limited range of possible answers that researcher had selected in advance
open-ended: respondents free to answer in own words
practical strengths for questionaires
quick and cheap way to gather quantitative data from range of people
no need to recruit and train interviewers
data is easy to quanitify and can be computer processed to reveal relationships between variables
practical limitations for questionnaires
data is limited and superficial
offer incentives to persuade people to take part (added cost)
low response rates
inflexible as questions cannot be changed
questionnaires and reliability
they can be replicated and are reliable
positivists regard reliability as important because it allows scientists findings to be checked and falsified by others
questionnaires and represenativeness
positivists likely to favour as it yeilds represenative data as:
large scale: questionnaires can collect information from a large scale of people
representative samples: more sophisicated sampling techniques
detachment and objectivity
questionnaires are detached and scientific form of research
favourable for positivists as scientists own subjective opinions and values must be kept seperate from research
interpretivism and detachment
how valid are questionnaires really?
interpretivists seek to discover the meanings that underlie actions and social reality
to obtain valid data, methods must gain an subjective understanding which questionnaires do not offer (people may misunderstand the question, cultural and language barriers)
cost of detachment is invalid data that fails to give a true picture of repsondents meaning