Of course, some people have more memories from early childhood than others do. It appears that remembering is partly influenced by the culture of family engagement. A 2009 study conducted by Peterson together with Qi Wang of Cornell and Yubo Hou of Peking University found that children in China have fewer of these memories than children in Canada. The finding, they suggest, might be explained by culture: Chinese people prize individuality less than North Americans and thus may be less likely to spend as much time drawing attention to the moments of an individual’s life. Canadians, by contrast, reinforce recollection and keep the synapses that underlie early personal memories vibrant. Another study, by the psychologist Federica Artioli and colleagues at the University of Otago in New Zealand in 2012, found that young adults from Italian extended families had earlier and denser memories than those from Italian nuclear families, presumably as a result of more intense family reminiscence.