Two decades ago, cognitive-neuroscience research that focused mainly on the neural underpinnings of perception, attention, memory, language and emotion did not compare, probably for practical reasons, different cultural groups. In the early 1990s, cognitive-neuroscience research extended into the field of social cognition, targeting the neural correlates of interpersonal and social behaviors. This led to the birth of ‘social neuroscience’ or ‘social cognitive neuroscience’ around the turn of the twenty-first century. (Han, Shihui and Georg Northoff. "Culture-sensitive neural substrates of human cognition: a transcultural neuroimaging approach." Perspectives. August 2008. Vol 9. Macmillan Publishers Limited.)