National Academies Press: OpenBook
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×

MODERNIZING
CRIME STATISTICS

Report 2–New Systems for Measuring Crime

Panel on Modernizing the Nation’s Crime Statistics

Janet L. Lauritsen and Daniel L. Cork, Editors

Committee on National Statistics
Committee on Law and Justice

Division of Behavioral and Social Sciences and Education

A Consensus Study Report of

images

THE NATIONAL ACADEMIES PRESS
Washington, DC
www.nap.edu

Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×

THE NATIONAL ACADEMIES PRESS 500 Fifth Street, NW Washington, DC 20001

The project that is the subject of this report was supported by the Bureau of Justice Statistics, Office of Justice Programs, and the Federal Bureau of Investigation, via a grant from the National Science Foundation (No. SES-1024012) that permits a consortium of federal agencies to support the work of the Committee on National Statistics. Any opinions, findings, conclusions, or recommendations expressed in this publication do not necessarily reflect the views of the organizations or agencies that provided support for the project.

International Standard Book Number-13: 978-0-309-47261-6
International Standard Book Number-10: 0-309-47261-X
Digital Object Identifier: https://doi.org/10.17226/25035

Additional copies of this publication are available from the National Academies Press, 500 Fifth Street, NW, Keck 360, Washington, DC 20001; (800) 624-6242 or (202) 334-3313; http://www.nap.edu.

Copyright 2018 by the National Academy of Sciences. All rights reserved.

Printed in the United States of America

Suggested citation: National Academies of Sciences, Engineering, and Medicine. (2018). Modernizing Crime Statistics—Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. https://doi.org/10.17226/25035.

Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×

images

The National Academy of Sciences was established in 1863 by an Act of Congress, signed by President Lincoln, as a private, nongovernmental institution to advise the nation on issues related to science and technology. Members are elected by their peers for outstanding contributions to research. Dr. Marcia McNutt is president.

The National Academy of Engineering was established in 1964 under the charter of the National Academy of Sciences to bring the practices of engineering to advising the nation. Members are elected by their peers for extraordinary contributions to engineering. Dr. C. D. Mote, Jr., is president.

The National Academy of Medicine (formerly the Institute of Medicine) was established in 1970 under the charter of the National Academy of Sciences to advise the nation on medical and health issues. Members are elected by their peers for distinguished contributions to medicine and health. Dr. Victor J. Dzau is president.

The three Academies work together as the National Academies of Sciences, Engineering, and Medicine to provide independent, objective analysis and advice to the nation and conduct other activities to solve complex problems and inform public policy decisions. The National Academies also encourage education and research, recognize outstanding contributions to knowledge, and increase public understanding in matters of science, engineering, and medicine.

Learn more about the National Academies of Sciences, Engineering, and Medicine at www.nationalacademies.org.

Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×

images

Consensus Study Reports published by the National Academies of Sciences, Engineering, and Medicine document the evidence-based consensus on the study’s statement of task by an authoring committee of experts. Reports typically include findings, conclusions, and recommendations based on information gathered by the committee and the committee’s deliberations. Each report has been subjected to a rigorous and independent peer-review process and it represents the position of the National Academies on the statement of task.

Proceedings published by the National Academies of Sciences, Engineering, and Medicine chronicle the presentations and discussions at a workshop, symposium, or other event convened by the National Academies. The statements and opinions contained in proceedings are those of the participants and are not endorsed by other participants, the planning committee, or the National Academies.

For information about other products and activities of the National Academies, please visit nationalacademies.org/whatwedo.

Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×

PANEL ON MODERNIZING THE NATION’S CRIME STATISTICS

JANET L. LAURITSEN,* (Chair), Department of Criminology and Criminal Justice, University of Missouri–St. Louis

DANIEL B. BIBEL, Crime Reporting Unit, Massachusetts State Police, Maynard (retired)

JONATHAN P. CAULKINS, Heinz College of Information Systems and Public Policy, Carnegie Mellon University

KIM ENGLISH, Division of Criminal Justice, Colorado Department of Public Safety

ROBERT M. GOERGE, Chapin Hall at the University of Chicago

NOLA M. JOYCE, Philadelphia Police Department (retired)

DAVID MCDOWALL, Violence Research Group, University at Albany, State University of New York

JENNIFER H. MADANS, National Center for Health Statistics

MICHAEL D. MALTZ, Department of Criminology, Law, and Justice, University of Illinois at Chicago (emeritus) and Criminal Justice Research Center, Ohio State University

MICHAEL C. MILLER, Coral Gables Police Department, Florida

JAMES J. NOLAN, III, Department of Sociology and Anthropology, West Virginia University

AMY O’HARA, Stanford Institute for Economic Policy Research, Stanford University

JOHN V. PEPPER, Department of Economics, University of Virginia

ALEX R. PIQUERO, School of Economic, Political, and Policy Sciences, University of Texas at Dallas

JEFFREY L. SEDGWICK, Justice Research and Statistics Association, Washington, DC

JAMES P. LYNCH, Department of Criminology and Criminal Justice, University of Maryland (Consultant to the panel)

PAUL K. WORMELI, Wormeli Consulting, LLC, Ashburn, Virginia (Consultant to the panel and liaison from Committee on Law and Justice)

DANIEL L. CORK, Study Director

SETH HAUSER, Senior Program Officer (February–October 2015)

EDWARD SPAR, Senior Program Officer (through September 2014)

MICHAEL SIRI, Program Associate

JORDYN WHITE, Program Officer

___________________

* Served as member of the panel from formation through December 8, 2014.

Served as chair of the panel from formation through December 8, 2014, following appointment as executive director of the Justice Research and Statistics Association.

Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×

COMMITTEE ON NATIONAL STATISTICS 2018

ROBERT M. GROVES (Chair), Office of the Provost, Department of Mathematics and Statistics, and Department of Sociology, Georgetown University

FRANCINE BLAU, Department of Economics, Cornell University

MARY ELLEN BOCK, Department of Statistics, Purdue University

ANNE C. CASE, Woodrow Wilson School of Public and International Affairs, Princeton University

MICHAEL CHERNEW, Department of Health Care Policy, Harvard Medical School

JANET CURRIE, Woodrow Wilson School of Public and International Affairs, Princeton University

DONALD A. DILLMAN, Department of Sociology, Washington State University

CONSTANTINE GATSONIS, Center for Statistical Sciences, Brown University

JAMES S. HOUSE, Survey Research Center, Institute for Social Research, University of Michigan, Ann Arbor

THOMAS L. MESENBOURG, Retired; formerly, U.S. Census Bureau

SARAH M. NUSSER, Department of Statistics, Center for Survey Statistics and Methodology, Iowa State University

COLM A. O’MUIRCHEARTAIGH, Harris School of Public Policy Studies, University of Chicago, and NORC at the University of Chicago

JEROME P. REITER, Department of Statistical Science, Duke University

ROBERTO RIGOBON, Sloan School of Management, Massachusetts Institute of Technology

JUDITH A. SELTZER, Department of Sociology, University of California, Los Angeles

EDWARD H. SHORTLIFFE, Columbia University and Arizona State University

BRIAN HARRIS-KOJETIN, Director

CONSTANCE F. CITRO, Senior Scholar

Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×

COMMITTEE ON LAW AND JUSTICE 2018

ROBERT D. CRUTCHFIELD (Chair), Department of Sociology, University of Washington (emeritus)

SALLY S. SIMPSON (Vice-chair), Department of Criminology and Criminal Justice, University of Maryland

PREETI CHAUHAN, John Jay College of Criminal Justice

KIMBERLÉ W. CRENSHAW, School of Law, University of California, Los Angeles

JOHN J. DONOHUE III, Stanford Law School, Stanford University

MARK S. JOHNSON, Department of Community and Family Medicine, Howard University

MARK A.R. KLEIMAN, Marron Institute of Urban Management, New York University

JAMES P. LYNCH, Department of Criminology and Criminal Justice, University of Maryland

KAREN MATHIS, Institute for the Advancement of the American Legal System, University of Denver

DANIEL S. NAGIN, H. John Heinz III College of Public Policy and Information Systems, Carnegie Mellon University

ANNE MORRISON PIEHL, Department of Economics and Program in Criminal Justice, Rutgers University

STEVEN RAPHAEL, Goldman School of Public Policy, University of California, Berkeley

LAURIE O. ROBINSON, Department of Criminology, Law, and Society, George Mason University

CYNTHIA RUDIN, Departments of Computer Science and Electrical and Computer Engineering and Prediction Analysis Lab, Duke University

SUSAN B. SORENSON, School of Social Policy and Practice, University of Pennsylvania

LINDA A. TEPLIN, Feinberg School of Medicine, Northwestern University

HEATHER ANN THOMPSON, Department of History, University of Michigan

BRUCE WESTERN, Department of Sociology, Harvard University

KATHI GRASSO, Director

Page viii Cite
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×

This page intentionally left blank.

Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×

Acknowledgments

THE PANEL ON MODERNIZING THE NATIONS CRIME STATISTICS is pleased to submit this second and final report on modernizing the collection of data on crime in the United States. Of necessity, because most of the data gathering for this final report took place during preparation of our first report, these acknowledgments are virtually identical to those in Report 1. We trust that it will be understood that the repetition is not meant to diminish our appreciation of the time and talent of all those who have contributed to the panel’s work.

Both of our sponsoring agencies—the Bureau of Justice Statistics (BJS) and the Criminal Justice Information Services (CJIS) Division of the Federal Bureau of Investigation (FBI)—committed considerable resources and attention to our study, for which we are greatly appreciative. Former BJS director William Sabol, deputy director Gerard Ramker, and deputy and acting director Jeri Mulrow provided constant support; we owe much to senior statistical advisor Allen Beck for his discussions of his participation with the United Nations Office on Drugs and Crime (UNODC) expert work group on crime classification; and we thank the other BJS staff who gave unyieldingly of their time, including Howard Snyder, Michael Planty, and Erica Smith. At FBI/CJIS, Amy Blasher provided valuable assistance and liaison to our panel as Uniform Crime Reporting (UCR) Program manager, Crime Statistics Management unit chief, and UCR Modernization manager; Samuel Berhanu provided updates to the panel after succeeding Blasher as Crime Statistics Management unit chief. Michelle Klimt was instrumental in the creation of this project during her time as chief of the CJIS Law Enforcement Support Section, and John Derbas has continued to provide assistance. We have also benefited from extensive interaction with statisticians James Noonan and Cynthia Barnett-Ryan, from the engagement of Randall Thysse in our work, and from a discussion with executive assistant director for the Science and Technology Branch Amy Hess

Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×

during her tenure in that position. The U.S. Office of Management and Budget provided the essential encouragement for BJS and FBI to jointly sponsor this review; we are particularly grateful to Rochelle Martinez and the Statistical and Science Policy Office.

The production of a modern classification of crime, in Report 1, is arguably the major product and weightiest conceptual lift of this project. In the development of our proposed classification—from which stems the discussion in this second report—we remain greatly indebted to the work of a UNODC expert work group established to draft an International Classification of Crime for Statistical Purposes. Angela Me, chief of the UNODC’s Research and Trend Analysis Branch, traveled to speak to our panel in person at our second meeting, and Michael Jandl (research officer in the Statistics and Survey Division) graciously stepped in on short notice to give a brief overview of the UNODC work by teleconference at our first meeting. We note that the UNODC work group is continuing to work out the methodological and implementation issues of the kind we address in this report and look forward to continued cooperation, and have appreciated the opportunity to discuss the work at conferences on international crime, justice, and governance statistics.

With continued appreciation, we refer readers to Appendix B of Report 1—the detailed list of participant stakeholders from our panel’s data-gathering meetings. We again thank all the speakers and participants who enriched our discussions with their wide-ranging perspectives (and shared interest in high-quality crime and justice data), and look forward to continued collaboration in implementation stages.

At the National Academies of Sciences, Engineering, and Medicine, Michael Siri provided expert and always considerate assistance in managing the logistics of this very active study panel. For a little more than 6 critical months in 2015, the panel had the invaluable assistance of Seth Hauser, who took to a short-term assignment as senior program officer with gusto and deftly constructed the agenda for two of our panel meetings. Program officer Jordyn White assisted with our proceedings. Daniel Cork served as study director for this project and deserves special recognition. His skills for incorporating large amounts of technical and organizational data on crime statistics with insights from data users, providers, and panel members were inimitable and invaluable to the writing of this report.

This Consensus Study Report was reviewed in draft form by individuals chosen for their diverse perspectives and technical expertise. The purpose of this independent review is to provide candid and critical comments that will assist the National Academies of Sciences, Engineering, and Medicine in making each published report as sound as possible and to ensure that it meets the institutional standards for quality, objectivity, evidence, and responsiveness to the study charge. The review comments and draft manuscript remain confidential to protect the integrity of the deliberative process.

Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×

We thank the following individuals for their review of this report: Thomas Abt, Harvard Law School; John J. Donohue III, Stanford Law School; John Jackson, Patrol Region 3, Houston Police, Houston, TX; Angela Me, Research and Trend Analysis Branch, United Nations Office on Drugs and Crime; Peter Reuter, School of Public Policy and Department of Criminology, University of Maryland, College Park; John Roman, NORC at the University of Chicago; and Max Schlueter, The Crime Research Group, Montpelier, VT.

Although the reviewers listed above provided many constructive comments and suggestions, they were not asked to endorse the conclusions or recommendations of this report nor did they see the final draft before its release. The review of this report was overseen by Alfred Blumstein, H. John Heinz III College of Public Policy and Information Systems, Carnegie Mellon University, and Philip J. Cook, Sanford School of Public Policy, Duke University. They were responsible for making certain that an independent examination of this report was carried out in accordance with the standards of the National Academies and that all review comments were carefully considered. Responsibility for the final content rests entirely with the authoring committee and the National Academies.

Janet L. Lauritsen, Chair
Panel on Modernizing the Nation’s Crime Statistics

Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×

This page intentionally left blank.

Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×

This page intentionally left blank.

Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×

This page intentionally left blank.

Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×

This page intentionally left blank.

Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×
Page R1
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×
Page R2
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×
Page R3
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×
Page R4
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×
Page R5
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×
Page R6
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×
Page R7
Page viii Cite
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×
Page R8
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×
Page R9
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×
Page R10
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×
Page R11
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×
Page R12
Page xiii Cite
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×
Page R13
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×
Page R14
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×
Page R15
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×
Page R16
Page xvii Cite
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×
Page R17
Page xviii Cite
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×
Page R18
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×
Page R19
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2018. Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime. Washington, DC: The National Academies Press. doi: 10.17226/25035.
×
Page R20
Next: Summary »
Modernizing Crime Statistics: Report 2: New Systems for Measuring Crime Get This Book
×
Buy Paperback | $65.00 Buy Ebook | $54.99
MyNAP members save 10% online.
Login or Register to save!
Download Free PDF

To derive statistics about crime – to estimate its levels and trends, assess its costs to and impacts on society, and inform law enforcement approaches to prevent it - a conceptual framework for defining and thinking about crime is virtually a prerequisite. Developing and maintaining such a framework is no easy task, because the mechanics of crime are ever evolving and shifting: tied to shifts and development in technology, society, and legislation.

Interest in understanding crime surged in the 1920s, which proved to be a pivotal decade for the collection of nationwide crime statistics. Now established as a permanent agency, the Census Bureau commissioned the drafting of a manual for preparing crime statistics—intended for use by the police, corrections departments, and courts alike. The new manual sought to solve a perennial problem by suggesting a standard taxonomy of crime. Shortly after the Census Bureau issued its manual, the International Association of Chiefs of Police in convention adopted a resolution to create a Committee on Uniform Crime Records —to begin the process of describing what a national system of data on crimes known to the police might look like.

Report 1 performed a comprehensive reassessment of what is meant by crime in U.S. crime statistics and recommends a new classification of crime to organize measurement efforts. This second report examines methodological and implementation issues and presents a conceptual blueprint for modernizing crime statistics.

  1. ×

    Welcome to OpenBook!

    You're looking at OpenBook, NAP.edu's online reading room since 1999. Based on feedback from you, our users, we've made some improvements that make it easier than ever to read thousands of publications on our website.

    Do you want to take a quick tour of the OpenBook's features?

    No Thanks Take a Tour »
  2. ×

    Show this book's table of contents, where you can jump to any chapter by name.

    « Back Next »
  3. ×

    ...or use these buttons to go back to the previous chapter or skip to the next one.

    « Back Next »
  4. ×

    Jump up to the previous page or down to the next one. Also, you can type in a page number and press Enter to go directly to that page in the book.

    « Back Next »
  5. ×

    Switch between the Original Pages, where you can read the report as it appeared in print, and Text Pages for the web version, where you can highlight and search the text.

    « Back Next »
  6. ×

    To search the entire text of this book, type in your search term here and press Enter.

    « Back Next »
  7. ×

    Share a link to this book page on your preferred social network or via email.

    « Back Next »
  8. ×

    View our suggested citation for this chapter.

    « Back Next »
  9. ×

    Ready to take your reading offline? Click here to buy this book in print or download it as a free PDF, if available.

    « Back Next »
Stay Connected!