Case report: Dancing in the dark: A critical single case study engaging a blind father in the rehabilitation journey of his visually impaired child.

Background: Face-to-face visual contact is a key component of the early parent-child interaction, therefore a visual impairment condition of the parent or the child represents a risk factor for dyadic patterns' development.

Aims: The study presents a critical single case of a blind father and a 18-month-old visually impaired child. The study aims to explore changes in the relational functioning of this dyad during an early family-centered intervention.

Flexibility and organization in parent-child interaction through the lens of the dynamic system approach: A systematic review of State Space Grid studies.

The dynamic systems (DS) theory has been previously applied to the regulatory processes that characterize the parent-child dyad. These processes provide infants with adequate flexibility to respond and adapt to environmental stimulations and sufficient stability to develop and maintain coherent self-organization. The State Space Grid (SSG) tool was specifically developed to provide graphical representations and quantitative assessments of different measures of dyadic flexibility and organization.