Marc Weissbluth writes parenting books about infant and child sleep, best known for Healthy Sleep Habits, Happy Child. He argues that regular sleep, age-appropriate schedules and attention to signs of tiredness can reduce overtiredness and improve family routines, discussing naps, night waking and developmental changes from infancy onward. Weissbluth’s approach has often been associated with “cry it out” methods, although the book describes a range of strategies and degrees of parental intervention. His writing is practical and prescriptive, aimed at parents rather than sleep researchers. Because infant sleep advice changes and families face different medical, feeding and developmental circumstances, the book is best used as one parenting framework rather than universal clinical guidance. Healthy Sleep Habits, Happy Child is best used as one structured approach to children’s sleep, with its scheduling and crying-related advice weighed against current paediatric guidance and the needs of an individual child. Read more Less