**1. Introduction**

This chapter highlights the importance of adopting a broader as well as longer perspective in screening for problems of language and communication in children prospectively as well as in adults retrospectively. As coauthors we represent a wide range of professional experience covering different disciplines: speech and language pathology, pediatrics, child psychiatry and adult psychiatry. We have several years of experience of working in teams for assessment and diagnostics as well as of performing interventions for children, youth and adults with complex developmental disorders.
