Key points are not available for this paper at this time.
Writing expressly for this book, the foremost innovators in child development today have contributed state-of-the-art chapters that summarize current trAnds in the field and point the way to the future. Each author examines a major topic and reveals what we know, how to interpret this knowledge, what requires further research, and how we may resolve some of the remaining questions.
A 1990 study studied this question.