Oxytocin increases liking for a country's people and national flag but not for other cultural symbols or consumer products.

While there was no treatment × category interaction [ F (4, 47) = 0.169, p = 0.954, η 2 = 0.004], indicating that OXT effects were similar across the five categories, there was a marginally significant treatment × country interaction [ F (3, 47) = 2.89, p = 0.038, η 2 = 0.058 – p < 0.025 considered significant following correction for multiple ANOVAs] due to OXT effects occurring mainly for Chinese stimuli ( p = 0.014).

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Post-hoc comparison tests also confirmed a significant increase in likeability scores for China social stimuli in the OXT group in test 1 ( p = 0.02) and a trend toward significance in test 2 ( p = 0.077).

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