The witness, Dr. D. Laikin: Repeat the last question.
Adv. Dr. Tal Rotman: Is it true that data on education and socioeconomic status may influence the public's perceptions of the factors that threaten them??
The witness, Dr. D. Laikin: Yes.
Dr. Lykin also agreed that the research groups "...abilities may differ from one another in terms of socio-economic or level of education" (pp. 1290-1291), and also because "...Weighting according to gender quotas" (p. 1286).
- Use of an invalid questionnaire (even though it was presented as such)
Prof. Lahad noted in his testimony that they had compiled the questionnaire to cover the subject of this case, and he was asked and answered as follows:
Adv. Dr. Tal Rotman: OK. Now you can explain to me what a valid questionnaire is.?
The witness, Prof. M. Echo: A valid questionnaire is a questionnaire that you actually want through a very long process to validate each and every question statistically. Alpha Kronbach, but it won't help this esteemed audience.
Adv. Dr. Tal Rotman: You didn't do it, but you have it.
The witness, Prof. M. Echo: Lasker doesn't have to do that.
Adv. Dr. Tal Rotman: You don't have to do it
The witness, Prof. M. Echo: For a survey, no.
Adv. Dr. Tal Rotman: The questionnaires were not valid?
The witness, Prof. M. Echo: They are survey questionnaires, I repeated it.
(page 1201)
And later on -
Adv. Dr. Tal Rotman: They weren't valid, the questionnaires weren't valid, right?
The witness, Prof. M. Echo: Not validated because it's irrelevant.
Adv. Dr. Tal Rotman: Not validated.
Adv. Mr. D. Or Chen: Don't yell at the witness!
Adv. Dr. Tal Rotman: Not validated. So I refer you to section 2 to page 2 and there it says the research tools included a number Validated Questionnaires.
The witness, Prof. M. Echo: There are also valid questionnaires here. Yes, sure..
Adv. Dr. Tal Rotman: Are there also valid questionnaires here?