*416 Opinion
The respondent father appeals from the judgment of the trial court modifying a prior custody order and granting shared physical custody of his two minor children to the respondent mother. 1 On appeal, the father claims that the court (1) improperly found a material change in the mother’s circumstances and (2) abused its discretion when it modified the original order of custody without making a finding that doing so was in the children’s best interests. Because we agree with the second claim, we reverse the order of the trial court.
The following facts and procedural history are necessary for the resolution of the father’s appeal. The respondents are the biological parents of two minor children. On March 7, 2002, the court adjudicated the children uncared for while they were in the custody of the mother and awarded primary physical custody to the father. The court also simultaneously awarded joint legal custody and joint guardianship to both parents. 2 On September 1, 2004, the mother filed a motion for a modification of the order, seeking physical custody of the two children. On September 28, 2004, the court modified the custody order and transferred primary custody to the mother. At this time, the court also noted that “all future modifications are to be brought in [the] family relations session of Superior Court.” That order subsequently was vacated on December 14,2004. Thereafter, the court heard the petition on March 3, 2005, and found that there was a material change in the mother’s *417 circumstances. The court then modified the custody order, giving the parties shared physical custody, while legal custody and guardianship remained with both parties. It is from this modification of the custody order that the father appeals.
As a threshold matter, we first consider whether there is an adequate record for review. An adequate record generally includes either a memorandum of decision or a transcript signed by the trial judge; Practice Book § 64-1; and the appellant bears the responsibility of providing such.
Chase Manhattan Bank/City Trust
v.
AECO Elevator Co.,
We now turn to the prevailing law on custody modification. The authority of the court to modify custody orders is found in General Statutes § 46b-56 (b),
3
which provides in relevant part that “[i]n making or modifying any order with respect to custody or visitation, the court shall ... be guided by the best interests of the
*418
child . . . ,”
4
“Before a court may modify a custody order, it must find that there has been a material change in circumstance since the prior order of the court, but the ultimate test is the best interests of the child.” (Internal quotation marks omitted.)
Kennedy
v.
Kennedy,
I
The father first claims that the court improperly found a material change in the mother’s circumstances. We disagree.
We begin by setting forth our standard of review. “When the factual basis of the trial court’s decision is challenged on appeal, the role of this court is to determine whether the facts set out in . . . the decision . . . are clearly erroneous.” (Internal quotation marks omitted.)
Lambert
v.
Donahue,
After reviewing the record, we conclude that the court’s finding of a material change in the mother’s circumstances is supported by the evidence. The court
*419
had before it the testimony of the respondents and a representative of the department of children and families, as well as a social study conducted by the department of children and families. “[I]t is the trier’s exclusive province to weigh the conflicting evidence, determine the credibility of witnesses and determine whether to accept some, all or none of a witness’ testimony.” (Internal quotation marks omitted.)
Lowe
v.
Shelton,
II
The father next claims that the court abused its discretion by modifying the custody order without making a finding that doing so was in the children’s best interests. We agree.
The sole question is whether the trial court abused its discretion in deciding that the best interests of the children would be served by the modification. “The trial court [has] the advantage of observing the witnesses and the parties. Considerable evidence [normally is] presented concerning the activities of the parties since [the rendering of the original judgment], . . . [W]hether the best interests of the [children] dictate a change of custody is left to the broad discretion of the
*420
trial court. ... A mere difference of opinion or judgment cannot justify the intervention of this court. Nothing short of a conviction that the action of the trial court is one which discloses a clear abuse of discretion can warrant our interference.” (Internal quotation marks omitted.)
Kennedy
v.
Kennedy,
supra,
It is well established that a conflict between parents as to custody “is best resolved by placing the burden on the noncustodial parent to prove by a fair preponderance of the evidence that a transfer of custody is in the best interests of the children.”
Cookson
v.
Cookson,
The judgment is reversed and the case is remanded with direction to deny the respondent mother’s motion to modify the court’s order as to custody of the children.
In this opinion the other judges concurred.
Notes
The court order presently on appeal arises from a petition by the mother to transfer physical custody of the children to her, thereby modifying a prior order granting the father primary physical custody.
In the underlying action, the commissioner of the department of children and families (commissioner) brought a neglect petition against both parents. We note that in resolving the petition, the court did not award guardianship to the commissioner.
We note that as the court ordered further action in this case to occur in the family relations section of the Superior Court and the guardianship of the children remained with the parents and not the commissioner of the department of children and families, General Statutes § 46b-56 is the controlling statute. Cf.
In re Stacy G.,
General Statutes § 46b-56 (b) was revised effective October 1, 2005, by Public Acts 2005, No. 05-258, § 3. It now provides in relevant part that “the rights and responsibilities of both parents shall be considered and the court shall enter orders accordingly that serve the best interests of the child . . . .” The requirement that the court’s decision ultimately serve the best interests of the child, therefore, remains unchanged.
When counsel for the father inquired of the court how it justified changing the custody order without making a best interests finding, the court attempted to downplay the nature of its order by pointing out that the father still had shared custody. We note that even a minor change in the custody arrangement is sufficient to require compliance with § 46b-56, which applies to “making or modifying any order with respect to custody . . . .” (Emphasis added.)
