ogy. Thus, the 3rd version of Behavioral Genetics has the potential to reach a much larger audience than previous editions.
Yet this very ''winning'' factor of the textbook also puts it at substantial risk. The risk here is that this edition may grow dated sooner than any of the previous editions. Whereas previous editions of the textbook proceeded according to a classical organizational structure by moving through the cornerstones of the field, this edition delivers knowledge through case studies, introducing the key conceptual and methodological issues by presenting various phenotypes. To the authors' credit, the introduction of this new, more narrative style of presentation has not in any way diminished the book's informational content compared to that of the previous editions; this sequel is as sophisticated as its predecessors. However, our frontiers of knowledge regarding these discussed phenotypes have in the past changed rather rapidly and, most likely, will change again. One of the outcomes of such a risk-taking structural decision will, no doubt, be more frequent editions of the book. The fit between the field's current status and the textbook is still almost perfect, but the gap grows larger every day as more discoveries (including some by the authors themselves) are made in the field.
Finally, the 3rd edition of Behavioral Genetics offers many bright spots that might enhance its success. These added features include biographical information on the key figures in the field and a reshuffling of the book's structure so that the information on required background knowledge does not interrupt the flow of the book and is presented in the Appendix. Just as one last penny turns a pile of change into a dollar, these features make the book the best and only textbook in behavioral genetics for those who come to this field by way of psychology and the other behavioral sciences.