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  • Home
  • Our Youth
  • At the University
  • A very unlikely event
  • Getting together
  • What to do?
  • We both start our research
  • Irmtraud starts her research
  • Some succesful years
  • The UvA and the SRF
  • Time to relax and refocus
  • Back to fundamental research
  • Entrepreneurial university
  • The ISI Conference in Beijing
  • With ISI tour to Tibet
  • Moving out of Amsterdam
  • Back to measurement research
  • Looking for new inspiration
  • Life satisfaction
  • The use of the Atomic bomb
  • Science and skating
  • Public Opinion research
  • Nato against Serbia
  • reviving an old hobby
  • Again the University
  • A difficult year
  • Moving twice
  • The start of the ESS
  • Saying goodbye
  • The Nias
  • Barcelona and Padua
  • The Dutch Trump
  • Another unusual year
  • ESS and ESRA
  • Our Choice: Barcelona
  • Farewell Holland
  • New activities in Spain
  • ESS Quality control
  • New activities
  • Retired in Catalunya
  • Married 40 years
  • From ESADE to the UPF?
  • To the Pradise
  • Inline instead of online
  • a frightening event
  • Again the university
  • Both retired
  • A New RECSM
  • Holidays
  • Research and fun
  • A book and a party
  • A slow recovery
  • Back to research
  • Our best scientific result
  • The atomic bomb
  • Many thanks
  • Contact
  • A narrow escape
  • la celebracion de la vida en illa de llac

Back to research

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At the end of 2019 I got the idea that I had some topics of our research not finished. One of these topics was that in social science research often several questions are asked to measure a concept of interest, while it is not clear if the combination is better than a single question.

For example in 1981 I already complained about the fact that one tried to measure “Job satisfaction” not only with the direct question 

- How satisfied are you with your job?
 
  but also with extra questions:

  • - Would you like to have another job?
  • - Would you recommend your job to your best friend?
  • - Would you choose this job again if you had the possibility?

Perhaps you think that these questions are not so bad to get an impression of the job satisfaction of a person, however only the first questions asks directly about job satisfaction while in the other questions also other considerations play a role. For example: how attractive the other jobs are the respondent thinks about or whether the qualifications of his/her friend are good enough or too good for this job. That means that responses to these extra questions not only are determined by job satisfaction but also by other ideas. This implies that the combination of these questions to measure job satisfaction could be even worse that the direct question alone.

Can it be done better?
It can indeed be done better because the linguistic research of Irmtraud had shown that some concepts can be formulated in different grammatical forms without changing the meaning of the questions. For example :
  • Are you satisfied with your job? 
  • Is your job satisficing ?
  • Does your job give you satisfaction?
These questions differ only grammatically, not in meaning. The quality of the combination of the responses to such questions, that only differ grammatically, can become better than the quality of a single question due to correction for random measurement errors.
In order to show that this is the case one has to have a procedure to determine the quality of a combination of questions. This was a second project I worked on.
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A second project
In the past, I had worked with  Anna Decastellarnau, a student at RECSM, on the correction for measurement errors in survey research. For that research, one has to know the quality of the questions. We had done this especially for single questions and not for combinations of questions. Given the issue mentioned above, we now wanted to do the same for combinations of questions. Therefore, it was necessary to determine the quality of the combinations of several questions or the composite score as they are called. I asked her to work out this statistical problem under my supervision. She did the statistical derivations very well. We worked on this issue with pleasure together. Later I simplified her statistical derivations and to get the paper published, I had still some work to do in the Corona time. I liked that work.
The paper with Irmtraud was published in 2020 and the second with Anna was published in the first months of 2021. 

This was an inspiration to do some more research work again because in the Corona time not much else could be done but reading or working on scientific problems to keep the mind active.
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  • Home
  • Our Youth
  • At the University
  • A very unlikely event
  • Getting together
  • What to do?
  • We both start our research
  • Irmtraud starts her research
  • Some succesful years
  • The UvA and the SRF
  • Time to relax and refocus
  • Back to fundamental research
  • Entrepreneurial university
  • The ISI Conference in Beijing
  • With ISI tour to Tibet
  • Moving out of Amsterdam
  • Back to measurement research
  • Looking for new inspiration
  • Life satisfaction
  • The use of the Atomic bomb
  • Science and skating
  • Public Opinion research
  • Nato against Serbia
  • reviving an old hobby
  • Again the University
  • A difficult year
  • Moving twice
  • The start of the ESS
  • Saying goodbye
  • The Nias
  • Barcelona and Padua
  • The Dutch Trump
  • Another unusual year
  • ESS and ESRA
  • Our Choice: Barcelona
  • Farewell Holland
  • New activities in Spain
  • ESS Quality control
  • New activities
  • Retired in Catalunya
  • Married 40 years
  • From ESADE to the UPF?
  • To the Pradise
  • Inline instead of online
  • a frightening event
  • Again the university
  • Both retired
  • A New RECSM
  • Holidays
  • Research and fun
  • A book and a party
  • A slow recovery
  • Back to research
  • Our best scientific result
  • The atomic bomb
  • Many thanks
  • Contact
  • A narrow escape
  • la celebracion de la vida en illa de llac