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(110) Survey (Yes, Prime Minister S1E2) - YouTube
Instructive illustration about how not to conduct an interview - or how to get a particular answer. Sir Humphrey (a senior civil servant) shows and less experienced colleague how a series of questions leading up to an almost inevitable answer; he then shows how a different series of questions leading up to the final question will probably get the opposite answer.
leading-question  interview  questionnaire  dissertation 
10 days ago by spencertree
Analyzing ordinal data with metric models: What could possibly go wrong?
"We present novel evidence that analyzing ordinal data as if they were metric can systematically lead to errors. We demonstrate false alarms (i.e., detecting an effect where none exists, Type I errors) and failures to detect effects (i.e., loss of power, Type II errors). We demonstrate systematic inversions of effects, for which treating ordinal data as metric indicates the opposite ordering of means than the true ordering of means. We show the same problems — false alarms, misses, and inversions — for interactions in factorial designs and for trend analyses in regression. We demonstrate that averaging across multiple ordinal measurements does not solve or even ameliorate these problems. A central contribution is a graphical explanation of how and when the misrepresentations occur. Moreover, we point out that there is no sure-fire way to detect these problems by treating the ordinal values as metric, and instead we advocate use of ordered-probit models (or similar) because they will better describe the data."
statistics  questionnaire  ordinal  bayes 
september 2018 by aapl
Yes or No 2.0: Are Likert scales always preferable to dichotomous rating scales?
"Even though 7-pt sometimes is still performing better, overall the lack of problems with 2-pt is really food for thought. Even I have to admit that sometimes the 2-pt can be simpler and easier. On the other hand, I will still point to our parenting questionnaire – which is much more tentative and early stage in terms of the constructs it measures than the B5! In that case, it essentially destroyed the instrument to use a 2-pt scale because there was so much consensus (or social desirability)! So while I agree with the theoretical point from the previous post – consider 2-pt scales! – I also want to sound a cautious note here because not every domain is as well-understood."

“It seems that it is relatively easy to develop a measure of personality of middling quality, and then it is terribly difficult to improve it.”
statistics  questionnaire  psychology 
september 2018 by aapl
SurveyPlanet
Online surveys don't have to be difficult to create. Use SurveyPlanet's simple, powerful survey tools to build and share free online surveys quickly!
survey  marketing  research  poll  tool  questionnaire 
may 2018 by iaeon
VioScreen - VIOCARE®
VioScreen is scientifically validated dietary analysis software that provides the equivalent of 90 days of nutrition tracking in about 20 minutes.
survey  questionnaire  diet  nutrition  tracking  qs 
may 2018 by sprague

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