I have 21 items that should load onto four factors. Several of these items had been reverse-coded. However, in a factor analysis, all the reverse coded items load onto one factor (when they actually ...
I am currently analyzing data from a 34-item Likert scale. I already recoded the negatively stated variables in SPSS as different variables. I'm about to do a factor analysis. Should I use the ...
After gathering data, we compute score of any Likert (summative) scale (previously identified as factor in factor analysis) by adding up its individual item scores (and maybe dividing the sum by the ...
How to compare two samples on 25 variables, each designed to measure one of three underlying constructs?
I have designed a questionnaire to test which of three motivational constructs can best be used to describe learners motivation. 25 statements were designed to test the three constructs (each ...
I have a questionnaire with 30 questions divided into 3 blocks of 10 questions each. Each question is answered with a number 1 to 10 and then an average of them all is calculated. I need to know how ...
Item analysis for a likert-type questionnaire - item discrimination, point-biserial, factor analysis, cronbach's alpha, other diagnostics?
I'm working on a questionnaire that is intended to measure two constructs. There are presently 26 items in the questionnaire -- eleven for construct 1 and 15 for construct 2 -- and each item has five ...
This follows on from my previous question on assessing reliability. I designed a questionnaire (six 5-points Likert items) to evaluate the attitude of a group of users toward a product. I would like ...
I used to analyse items from a psychometric point of view. But now I am trying to analyse other types of questions on motivation and other topics. These questions are all on Likert scales. My initial ...