The witness, Prof. M. Echo: Yes. Yes.
Adv. Dr. Tal Rotman: Where are the valid questionnaires?
The witness, Prof. M. Echo: In my opinion, for my memory, I don't remember at the moment but ask Dima, in my opinion, the valid questionnaire.
Adv. Dr. Tal Rotman: Why do you even read a questionnaire? Why are you reading a questionnaire? Is every question a questionnaire?
The witness, Prof. M. Echo: No, each sequence of questions is a questionnaire. In my opinion, the questionnaire, in my opinion, I don't remember, In my opinion, 19 is valid.
Adv. Dr. Tal Rotman: 19 By virtue of all this long questionnaire?
The witness, Prof. M. Echo: I think
Adv. Dr. Tal Rotman: Only question 19 is valid?
The witness, Prof. M. Echo: I think, I think, I said I didn't know.
(pp. 1202-1203).
- In this context, Dr. Lykin replied, among other things:
Adv. Dr. Tal Rotman: Explain to me what a valid questionnaire is?
The witness, Dr. D. Laikin: A valid questionnaire is a questionnaire whose purpose is to examine a certain theoretical structure, And he went through a series of processes or tests by content experts or some kind of comparative statistical operations that show that he is indeed testing what he intends to test.
Adv. Dr. Tal Rotman: And did your questionnaire pass all these exams?
The witness, Dr. D. Laikin: It has undergone a validity test and the so-called.
Adv. Dr. Tal Rotman: Explain.
The witness, Dr. D. Laikin: That is, when an expert, an expert user, in this case, Professor Lahad looks at the questionnaire for the first time and sees the title of what the questionnaire is supposed to check, he reads it and says that it seems that it actually measures what he intends to check. It's a certain type of validity check, OK? But it is a reproductive test, it exists and it is done in many surveys.
Adv. Dr. Tal Rotman: What you're actually saying is that we checked the validity of our questionnaire not in computational statistical ways, but by letting Professor Lahad read the questionnaire and he said it was valid?