Category	Factor	Survey 2	Survey 3	Answer
Fair society	fair society	All things considered, I think our current society is fair.	All things considered, I think our current society is fair.	1 = not at all, 10 = completely
Just society	just society	All things considered, I think our current society is just.	All things considered, I think our current society is just.
Fair/Just Society *	1	All things considered, I think our current society is fair.
	2	All things considered, I think our current society is unfair.
	3	All things considered, I think our current society is just.
	4	All things considered, I think our current society is unjust.
Distributive Justice **	disparity of justice	Do you think the disparity in Japan is in the right/just state?
	welfare justice	Do you think that welfare is rightly/justly correcting the disparity in current society?
Contribution Optimism	contribution	Do you want to contribute to society?	Do you usually seek to contribute to others or the world around you in your activities?	1 = not at all, 10 = completely
	optimism	How optimistic would you say you are about your future?	I am optimistic about my future.
Source: Made by the authors. Notes: * The Fair Society/Just Society score is calculated as the “sum of the scores for the items 1, 2, 3, and 4” divided by 4. The score for item 2 and item 4 is calculated by subtracting 11 from the original figure. ** As for Distributive Justice, the score is calculated by “the sum of the scores for the disparity of justice, welfare justice, and disparity elimination” divided by 3.