31. (1) In determining for the purposes of this Act what is in the best interests of a child, the court shall have regard to all of the factors or circumstances that it regards as relevant to the child concerned and his or her family.

(2) The factors and circumstances referred to in subsection (1) include:

(a) the benefit to the child of having a meaningful relationship with each of his or her parents and with the other relatives and persons who are involved in the child’s upbringing and, except where such contact is not in the child’s best interests, of having sufficient contact with them to maintain such relationships;

(b) the views of the child concerned that are ascertainable (whether in accordance with section 32 or otherwise);

(c) the physical, psychological and emotional needs of the child concerned, taking into consideration the child’s age and stage of development and the likely effect on him or her of any change of circumstances;

(d) the history of the child’s upbringing and care, including the nature of the relationship between the child and each of his or her parents and the other relatives and persons referred to in paragraph (a), and the desirability of preserving and strengthening such relationships;

(e) the child’s religious, spiritual, cultural and linguistic upbringing and needs;

(f) the child’s social, intellectual and educational upbringing and needs;

(g) the child’s age and any special characteristics;

(h) any harm which the child has suffered or is at risk of suffering, including harm as a result of household violence, and the protection of the child’s safety and psychological well-being;

(i) where applicable, proposals made for the child’s custody, care, development and upbringing and for access to and contact with the child, having regard to the desirability of the parents or guardians of the child agreeing to such proposals and co-operating with each other in relation to them;

(j) the willingness and ability of each of the child’s parents to facilitate and encourage a close and continuing relationship between the child and the other parent, and to maintain and foster relationships between the child and his or her relatives;

(k) the capacity of each person in respect of whom an application is made under this Act—

(i) to care for and meet the needs of the child,

(ii) to communicate and co-operate on issues relating to the child, and

(iii) to exercise the relevant powers, responsibilities and entitlements to which the application relates.

(3) For the purposes of subsection (2)(h), the court shall have regard to household violence that has occurred or is likely to occur in the household of the child, or a household in which the child has been or is likely to be present, including the impact or likely impact of such violence on:

(a) the safety of the child and other members of the household concerned;

(b) the child’s personal well-being, including the child’s psychological and emotional well-being;

(c) the victim of such violence;

(d) the capacity of the perpetrator of the violence to properly care for the child and the risk, or likely risk, that the perpetrator poses to the child.

(4) For the purposes of this section, a parent’s conduct may be considered to the extent that it is relevant to the child’s welfare and best interests only.

(5) In any proceedings to which section 3(1)(a) applies, the court shall have regard to the general principle that unreasonable delay in determining the proceedings may be contrary to the best interests of the child.

(6) In obtaining the ascertainable views of a child for the purposes of subsection (2)(b), the court—

(a) shall facilitate the free expression by the child of those views and, in particular, shall endeavour to ensure that any views so expressed by the child are not expressed as a result of undue influence, and

(b) may make an order under section 32.

(7) In this section "household violence" includes behaviour by a parent or guardian or a household member causing or attempting to cause physical harm to the child or another child, parent or household member, and includes sexual abuse or causing a child or a parent or other household member to fear for his or her safety or that of another household member.]