Age-related changes in cognitive and language functions have been extensively researched over the past half-century. The study of age-related changes has spanned numerous disciplines including linguistics, psychology, gerontology, neuroscience, and communication sciences. The older adult represents a unique population for studying cognition and language because of the many challenges that are presented with investigating this population, including individual differences in education, life experiences, health issues, social identity, as well as gender. The purpose of this book is to provide an advanced text that considers these unique challenges and assembles, in one source, current information regarding cognitive-linguistic processes in the aging population. Providing a comprehensive discussion of language across the adult lifespan by considering neurophysiology, cognition, psycholinguistics, and sociolinguistics offers a stronger foundation for understanding factors that contribute to normal changes in language processes.As demonstrated in this text and others, cognitive aging is an expansive field of study that involves understanding how cognitive changes normally occur across the adult lifespan. Understanding normal changes is critical for determining pathological as well as exceptional changes (Burke & McKay, 1997; Craik & Salthouse, 2007). Specific to language, changes have primarily focused on word retrieval (e.g., tip-of-the-tongue), sentence comprehension, and discourse. Recently, researchers have also considered the role of psychosocial factors on aging and how these factors may mediate age-related changes in cognitive and linguistic processes and these are discussed in later chapters. Finally, reading ability provides further insight into understanding how cognitive processes change with age and is further addressed in the book. The purpose of this chapter is to orient the reader to the text and overview the many facets of cognition, language, and psychosocial factors in the older adult.In the second chapter, Abrams and Davis provide an in depth review of the "tip-of-the-tongue" phenomenon a phenomenon that occurs in speakers of all