Human pairs show collective benefit in olfactory perception despite individual differences and verbal limits.

For the discrimination task, the similarity ratio was a significant predictor of collective benefit using similarity from day 1 ( B = 0.71, SE = 0.27, t (18) = 2.60, p = 0.018, 95% CI [0.13, 1.29]) and marginally significant for calculating similarity for day 2 ( B = 0.34, t (18) = 1.87, p = 0.078, 95% CI [−0.04, 0.73]).

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