During classroom discussions, a teacher often pays more attention to boys than girls. This is an example of

Gender bias refers to the unequal treatment of individuals based on their gender. When a teacher gives more attention to boys than girls during classroom discussions, it reflects a preference or differential treatment based on gender, which is the definition of gender bias. Gender identity refers to one's internal sense of being male or female, gender constancy is the understanding that gender remains stable over time, and gender relevance is not a standard psychological term.