Chapter 9: Non-experimental_survey Flashcards
(39 cards)
For what purposes are surveys used?
- to determine how people feel about a particular issue, such as gun control or the performance of the president of the United States
- attempt to find out the effect of some event on people’s behavior.
- surveys provide an opportunity to examine correlations among the participants’ responses and to look for possible patterns of cause and effect, such as showing that bullying in childhood is related to internalizing problems later in life
characteristics of survey
- First, surveys generally involve sampling.
- Second, surveys involve the self-reporting of behaviours, feelings, thoughts, and preferences, either in oral or written form.
- Third, all respondents answer the same set of predetermined questions to allow for comparison of responses.
a sample
(i.e., a subset of individuals)
population
all individuals of interest to the researcher
sampling frame
a specific list of the individuals in the population
Each individual who falls within the sampling frame is called
an element
andom sample:
a sample in which every member of the population has an equal and independent chance of being selected
haphazard sample:
population subgroup for whose selection the researcher uses hit-or-miss methods
purposive sample:
a nonrandom sample that is chosen for some characteristic that it possesses
convenience sample:
a nonrandom sample that is chosen for practical reasons
A sample is representative of the population when the sample has the same — as the population
distribution of characteristics
When some segments of the population are over-represented in the sample, — results
selection bias
Face-to-Face survey advantages
- interviewers can establish rapport with the people being interviewed.
- Interviewers can direct the attention of the respondents to the material and motivate them to answer the questions carefully
- guarantee the order in which questions are administered, thus making sure that people answer the survey in the order intended.
- interviewers may be able to notice when respondents seem to misunderstand a question and explain its meaning and can probe for more complete answers when a respondent gives a brief answer or one that does not respond to the question.
Face to face disadvantage
- The presence of the interviewer creates a social situation that may result in biased responses
- Respondents say what they think interviewers want to hear
- much more expensive
- safety of the interviewers
Written response (mail)
Advantage
- very efficient use of time and money and can have a very high response rate if attendance by group members is high
- Low cost
- respondents can complete the questionnaire at their leisure, and they have greater anonymity in their responses, reducing interviewer bias
Mail Survey Disadvantage
- The main problem with written questionnaires is response rate
- often less than 50%
- low response rates may invalidate the results because of differences between individuals who respond and those who don’t
- There is no possibility of clarifying questions that might be misunderstood. (illiterate or have vision problems)
- Illiterate participants are frequently embarrassed to admit their problem and sometimes respond to questions they do not understand, compromising the reliability and validity of the data.
- impossible to determine how seriously the respondent took the survey
- i.e. given to a child in the family to fill out
internet survey
Advantage
- social desirability may be reduced
- all the questions were asked in order, and none were skipped.
- The computer can check for invalid responses and prompt the interviewer to recheck implausible answers, such as the presence of 20 children in the home
- control the sequencing and branching of questions so that, for example, people who do not drive will not need to be asked
- 24 hours a day, making a high level of participation possible without the costs of photocopying or postage
- some indications that Internet surveys have higher predictive validity than data collected by telephone without sacrificing measurement reliability
Internet survey Disadvantage
- Illiterate or uncooperative participants will pro- vide meaningless data
- True measures of response rates are difficult
- typically rather low
- might not be honest about their ages or genders
- random sample of respondents may also be difficult to obtain because people participating in a Web-based survey are self-selected
- security of responding is vital. Further, storage of survey information obtained electronically must be ensured
telephone survey
Advantage
- low cost
- involve less effort than some other methods of administration
- rapidly, without having to wait for interviewers to travel to many locations or for respondents to mail back their completed surveys
- possibility of using a computer-assisted interview/the interviewer reads the questions from a computer screen
- can be conducted from a central location where the interviewers can be supervised
- no reliable evidence that the data collected from cell phone–based studies are poorer in quality than landline- based surveys
telephone survey Disadvantage
- Some states prohibit using auto-dialers
- since a person with a cell phone can be physically located almost anywhere, sampling appropriately from within a spe- cific location, such as everyone who may live within a particular town, is extremely difficult.
- introduce the possibility of interviewer bias
- must also be relatively short to get participants to finish the survey
- harder to establish rapport or to judge the degree of seriousness
What are the relative advantages of using open-ended questions in a survey?
- Using open-ended questions makes it more likely that the questionnaire will discover something not anticipated by its designers
- more useful for smaller and preliminary studies.
- Coding a small number of open-ended surveys may be manageable, whereas hundreds would not
- trying out a preliminary version of a survey with open-ended questions can determine the range of likely answers, permitting you to standardize the alternatives into a closed-ended format
What are the relative advantages and disadvantages of using closed-ended questions in a survey?
easier to code and analyze, and there are fewer off-the-wall responses
- alternatives are presented to the respondents, so they do not have to think as hard
- do not need to be as articulate to formulate their answers
What are the relative disadvantages of using open-ended questions in a survey?
- harder to code, however, because the answers are in narrative form makes data analysis a messy job and makes it likely that you will have to break a cardinal rule of research by not deciding in advance how you are going to analyze your data
- issues being studied may be too complex to reduce to a small set of alternatives, or the respondent may not agree with any of them, resulting in simplistic answers
What are the relative disadvantages of using closed-ended questions in a survey?
- issues being studied may be too complex to reduce to a small set of alternatives, or the respondent may not agree with any of them, resulting in simplistic answers
- tend to put words into the mouths of respondents, suggesting alternatives that respondents might never come up with them- selves
- errors can creep into the closed-ended questionnaire