Standardized video diagnostic instruments, such as the Play-PAB used in this study, are suitable for an objective and multidimensional assessment of early parent-child interactions. Furthermore, the present results support the assumption that early parent-child interaction is a multivariate construct.The correlation analyses show that various influencing factors, such as parental stress, are related to specific parental interaction qualities, such as intrusiveness, and as a consequence, affect the relationship building process with the child.Therefore, video diagnosticmethods are suitable for both objective therapy evaluation and individualizing therapy in preschool psychiatric settings.