Served Portion Sizes Affect Later Food Intake Through Social Consumption Norms.

There was a marginally significant effect of condition on perceptions of injunctive social norms for spaghetti, although there were no significant differences between the smaller portion size condition and larger portion size condition ( p = 0.18), between the smaller portion size condition and control condition ( p = 0.16), or between the larger portion size condition and control condition ( p = 0.99).

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