of this book is to explore the complex interplay between genetic factors and mental retardation, and the role of genetic counseling in addressing these issues.** The author, J. M. Berg, likely draws upon his expertise in genetics to examine the biological underpinnings of intellectual disability. The book probably delves into the methodologies and ethical considerations involved in providing genetic counseling to families affected by mental retardation, aiming to offer guidance and support in understanding inheritance patterns and potential interventions.

This book, published in 1971, likely represents an early and foundational exploration of genetic counseling in the context of mental retardation. Its focus on the scientific and ethical dimensions suggests it was intended for medical professionals, geneticists, and counselors. The material likely provides a detailed, albeit potentially dated, overview of the knowledge and practices available at the time, serving as a historical reference for the evolution of the field.