"agreed" in this paper, though, includes all responses above "do not agree" -- they gave four possible answers: "do not agree", "somewhat agree", "strongly agre

"agreed" in this paper, though, includes all responses above "do not agree" -- they gave four possible answers: "do not agree", "somewhat agree", "strongly agree", and "very strongly agree". Many people will choose "somewhat agree" to mean "well, I mean, it could happen". (Normally, you wouldn't want to so heavily skew your responses towards "agree" by having two "strongly agrees" but zero "strongly disagrees")