Adaptation of the working alliance inventory to therapeutic interventions for early-age regulatory and behavioral symptoms: French versions of the infant-toddler WAI for parents and therapists.

Objectives: The therapeutic alliance, an essential component of the therapeutic process, has been investigated in adult and child therapy, but studies in the context of parent-infant or parent-toddler therapeutic interventions are scarce. This monocentric study aims to produce a French cross-cultural adaptation of a therapeutic alliance scale for the context of early consultations in a child and psychiatry department.

Method: Fifty-five young children aged 3 to 30 months consulting for regulation or behavioral disorders and their mothers were included in the study. The working alliance inventory (WAI) was translated into French by two bilingual translators and adapted to early-age consultations in parent and therapist versions. Assessments of the child's symptoms and the parents' anxiety and depression were carried out at the start and end of therapy. We studied the association of the alliance with the initial clinical characteristics and with the outcome of the child and the mother. An exploratory factor analysis was performed considering the items most associated with expected outcomes.

Results: The alliance coded by the mother was lower in case of child behavioral problems and was associated with the mother and child outcome. Short versions of the infant-toddler WAI were developed based on factor analysis, highlighting four factors: positive goals and tasks, bond with the mother, alliance with the child, negative experience of care relationship.

Discussion: Results were similar to those found in therapy with adults or older children. The alliance issue in mother-baby therapies was as essential as in other therapy contexts. The short Infant-Toddler WAI resulting from this work must be validated in future studies.