“The concept of 'habitual residence' … must be interpreted as meaning that such residence corresponds to the place which reflects some degree of integration by the child in a social and family environment. To that end, where the situation concerned is that of an infant who has been staying with her mother only a few days in a member state – other than that of her habitual residence – to which she has been removed, the factors which must be taken into consideration include, first, the duration, regularity, conditions and reasons for the stay in the territory of that member state and for the mother's move to that state and second, with particular reference to the child's age, the mother's geographic and family origins and the family and social connections which the mother and child have with that member state.”
“(iii). The test adopted by the European Court is "the place which reflects some degree of integration by the child in a social and family environment" in the country concerned. This depends upon numerous factors, including the reasons for the family's stay in the country in question … (v). In my view, the test adopted by the European Court is preferable to that earlier adopted by the English courts, being focussed on the situation of the child, with the purposes and intentions of the parents being merely one of the relevant factors. (vi). The social and family environment of an infant or young child is shared with those (whether parents or others) upon whom he is dependent. Hence it is necessary to assess the integration of that person or persons in the social and family environment of the country concerned.”
“It is clear that parental intent does play a part in establishing or changing the habitual residence of a child: not parental intent in relation to habitual residence as a legal concept, but parental intent in relation to the reasons for a child's leaving one country and going to stay in another. This will have to be factored in, along with all the other relevant factors, in deciding whether a move from one country to another has a sufficient degree of stability to amount to a change of residence.”
“The quality of a child's stay in a new environment, in which he has only recently arrived, cannot be assessed without reference to the past. Some habitual residences may be harder to lose than others and others may be harder to gain. If a person leaves his home country with the intention of emigrating and having made all the necessary plans to do so, he may lose one habitual residence immediately and acquire a new one very quickly. If a person leaves his home country for a temporary purpose or in ambiguous circumstances, he may not lose his habitual residence there for some time, if at all, and correspondingly he will not acquire a new habitual residence until then or even later. Of course there are many permutations in between, where a person may lose one habitual residence without gaining another.”