Which of the following best defines 'ingroup'?

The term 'ingroup' is best defined as individuals within a community who share common characteristics. This definition highlights the concept of social identity, where members of an ingroup often perceive themselves as part of a collective based on shared traits, values, or interests. This commonality can foster a sense of belonging and identity among the members, which is a key element in social psychology.

While the other options discuss groups in various contexts, they do not accurately capture the essence of what an ingroup is. For instance, identifying people as outsiders or discussing stereotypical behavior refers more to the dynamics between ingroups and outgroups rather than defining ingroups themselves. Similarly, while discrimination can occur between groups, it is not a defining characteristic of what constitutes an ingroup. The focus on shared characteristics emphasizes the positive social bonds formed within that group, which is central to understanding ingroup dynamics.