Hello.
We have used the same questionnaire in two different studies and now I want to compare the results. i want to conduct multi group CFA. The problem is that in the first study we used the original 6-point scale while in the second study we used a 5-point scale. Is there an easy way to transform the scales so that they can be compared?
1. totally agree 2. agree 3. somehow agree 4. somehow disagree 5. disagree 6. totally disagree
1: totally disagree, 2: partially disagree, 3: neither disagree nor agree, 4: partially agree, 5: totally agree
Hi there,
Maybe transforming your data to Z-scores? not sure if appropriate for your needs. You can also think of conversion your 5-point to 6-point scale. For that, you can use the following conversion:
1 (on 5-point scale) = 1 (on 6-point scale)
2 = 2.25
3 = 3.5
4 = 4.75
5 = 6
This (https://stats.stackexchange.com/questions/6791/how-to-compare-likert-scales-with-varying-number-of-categories-across-time) might also work for you.
