The current book addresses the development of mental state understanding in children with typical and atypical population, and reports new suggestions about the way to evaluate it and to support it through training. The presented frame is multifaceted. In respect to typical populations, the role of maternal reflective functioning, language, communication, and educational contexts has been deepened
and the association with internalizing/externalizing behaviors, performances in spatial tasks and pragmatics has been addressed as well. As to atypical populations, deficits in mental states understanding are reported for children with different developmental disorders or impairments, as the agenesis of the corpus callosum, Down Syndrome, preterm birth, Autism Spectrum Disorder, hearing impairment and personality difficulties such as anxiety. Overall, the papers collected in our book allow a better understanding of the mechanisms influencing mental state understanding and the effects of mental state comprehension on development.