The iMotions Infant Research Guide provides a comprehensive overview of the latest advancements and foundational knowledge in infant research using biosensors. Covering infant health markers, developmental milestones, and real-world case studies, the guide explores how biosensors are revolutionizing research on topics like early autism detection and parent-infant interactions. It introduces various biosensor technologies, highlights current challenges, and explains how iMotions supports complex data collection and analysis. Researchers and practitioners interested in the cutting-edge of infant research should download this guide to access actionable insights and leverage new tools for studying infant development.