Have you ever considered what atypical development looks like in practice? Or how it occurs? Would you like to know which children are most at risk and why? In this new and fully updated edition, Janet M. Empson explores what is 'normal' and what is 'atypical' or 'unusual' in children's development. Combining key research with insightful case studies and examples, she examines the processes, circumstances, and conditions associated with developing atypically. This is invaluable reading for both students and professionals involved in child development.