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

In-group favoritism

In-group favoritism, sometimes known as in-group–out-group bias, in-group bias, or intergroup bias, is a pattern of favoring members of one's in-group over out-group…

Oxytocin

Oxytocin (Oxt or OT) is a peptide hormone and neuropeptide normally produced in the hypothalamus and released by the posterior pituitary.