Humans are ultra-social, yet, theories of cognition have often been occupied with the solitary mind. Over the last decade, an increasing volume of work has revealed how individual cognition is influenced by the presence of others. Not only do we rapidly identify others in our environment, but we align our attention with their attention, which influences what we perceive, represent and remember; even when our immediate goals do not involve coordination. The present article refers to the human sensitivity to others and to the targets and content of their attention as 'altercentrism'; and aims to bring seemingly disparate findings together, suggesting that they are all reflections of the altercentric nature of human cognition.