The second part of a two-phase clinical research project was undetaken to implement a reliable, valid, and easily administered instrument for measuring parental participation in the care of the hospitalized child. Eleven parental participation activities were identified and validated in the first part of the project through exploratory research with parents of hospitalized children, previous research, and an expert panel. In the second part of the project, which is the focus of this report members of an eight-member task force were used as consultants for development of the instrument and for planning inservices. Two videotaped vignettes of a nurse interviewing a mother during admission of her child to a pediatric orthopedic setting formed the basis of the inservices. The first vignette familiarized the nursing staff (N =31) with the instrument. The second vignette was used to measure the inter-rater reliabiality of the staff through completion of the instrument after viewing the tape. Eighty percent agreement was obtained with criteria established for rating the second vignette with the instrument which attests to its potential as a reliablc method of measuring parental participation.