The PSI-4-SF is an abbreviated version of the PSI-4. Please visit the PSI-4 page to purchase the full-length version. Thirty-six items are divided into three domains: Parental Distress (PD), Parent-Child Dysfunctional Interaction (P-CDI), and Difficult Child (DC), which combine to form a Total Stress scale. One simple form contains everything you need for administering the measure and for scoring and profiling results. The PSI-4-SF's brevity allows primary health care providers to identify those families most in need of follow-up services. It is also ideal for use in schools, mental health clinics, and research. Empirical validity has been established in studies that focused on parenting of Head Start children, medication adherence, and cognitive development of infants. (author abstract)