Lead author Sophie Moullin said that when her team looked at large scale representative studies in a number of countries they all found, from their observations, that between 38% and 42% of children suffered from poor attachment in all the different study locations. 主要研究者苏菲穆兰表示她所在的小组从全球的案例中选用了许多有代表性个案。通过观察发现全世界大约有38%到42%的孩子与父母的关系很疏远。