If a runner has 孤独感 running alone, he would have that not running anyway
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送交者: HunHunSheng 于 2006-10-17, 18:41:16:
回答: 会增加孤独感,造成心理阴影 由 bluesea 于 2006-10-17, 18:01:27:
So comparison should be made running vs not running while holding all other factors equal
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