Neuroscience and Biobehavioral Reviews

Racism and in-group favoritism is prevalent in our society and has been studied in Social Psychology for a long time. Recently it has become possible to investigate the neural mechanisms that underlie these in-group biases, and hence this review will give an overview of recent developments on the topic. Rather than relying on a single brain region or network, it seems that subtle changes in neural activation across the brain, depending on the modalities involved, underlie how we divide the world into 'us' versus 'them'. These insights have important implications for our understanding of how in-group biases develop and could potentially lead to new insights on how to reduce them.

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