Harvard Psychological Studies, Volume 1, represents a pioneering foray into the multifaceted field of early American psychology. Assembled by a distinguished group of early 20th-century psychologists, this collection showcases a breadth of literary styles from empirical studies to theoretical essays, reflecting the burgeoning interest in experimental and applied psychology of the time. The anthology captures the era's intellectual zeitgeist, grappling with foundational questions of human behavior, cognition, and emotion. Through a diverse array of investigations, ranging from sensory perception to animal psychology, the volume embodies the dynamic and interdisciplinary nature of psychology as it began to establish itself as a scientific discipline. The contributing authors, Hugo Münsterberg, Edwin B. Holt, Harvey A. Peterson, Robert Macdougall, and Robert M. Yerkes, alongside Gurry E. Huggins, were central figures in the early development of American psychology. Their collective work in this volume speaks to the rich interplay of ideas that characterized the period, drawing on and contributing to contemporary understandings of psychological processes. Their backgrounds, spanning experimental psychology, philosophy, and biology, mirrored the cross-disciplinary origins of psychology, providing the anthology with a nuanced exploration of its subjects that resonated with both national and international scholarly debates. For students, scholars, and anyone with a keen interest in the roots of psychology, Harvard Psychological Studies, Volume 1 offers an invaluable glimpse into the early challenges and triumphs of the field. The diversity of approaches and topics not only illuminates the historical path of psychological inquiry but also encourages a deeper appreciation for the complexity and depth of human psychology. This volume stands as a testament to the rich dialogue among some of the fields earliest innovators, offering readers the opportunity to trace the evolution of psychological thought through a pivotal period in its history.