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Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. Fourteenth Edition Our Sexuality Robert Crooks Karla Baur Laura Widman Australia • Brazil • Mexico • Singapore • United Kingdom • United States Copyright 2021 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. Our Sexuality, Fourteenth Edition © 2021, 2017 Cengage Learning, Inc. Robert Crooks, Karla Baur, and Laura Widman Unless otherwise noted, all content is © Cengage. WCN: 02-300 Senior Vice President, Higher Education & Skills ALL RIGHTS RESERVED. No part of this work covered by the copyright her ein Product: Erin Joyner may be reproduced or distributed in any form or by any means, except as permitted by U.S. copyright law, without the prior written permission of the Product Director: Laura Ross copyright owner. Product Manager: Josh Parrott Senior Content Manager: Tangelique Williams-Grayer For product information and technology assistance, contact u s at Product Assistant: Kat V. Wallace Cengage Customer & Sales Support, 1-800-354-9706 Marketing Manager: Tricia Salata or support.cengage.com. Intellectual Property Analyst: Deanna Ettinger For permission to use material from this tex t or Intellectual Property Project Manager: Nick Barrows product, submit all requests online at www.cengage.com/permissions. Production Service: Ann Borman, SPi Global US Art Director: Bethany Bourgeois Text Designer: Lisa Buckley Library of Congress Control Number: 2019949579 Student Edition: ISBN: 978-0-357-36075-0 Cover Designer: Bethany Bourgeois Loose-leaf Edition: ISBN: 978-0-357-36074-3 Cover Image: Arkadius Kozera/imageBROKER/Alamy Stock Photo Cengage 200 Pier 4 Boulevard Boston, MA 02210 USA Cengage is a leading provider of customized learning solutions with employees residing in nearly 40 different countries and sales in more than 125 countries around the world. Find your local representative at www.cengage.com. Cengage products are represented in Canada by Nelson Education, Ltd. To learn more about Cengage platforms and services, register or access your online learning solution, or purchase materials for your course, visit www.cengage.com. Printed in the United States of America Print Number: 01 Print Year: 2019 Copyright 2021 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. With sadness we dedicate this 14th edition to Robert Crooks, who passed away at the end of the last revision. Our Sexuality was his brilliant inspiration, and thousands of students have benefited from his commitment to this text. Copyright 2021 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. Copyright 2021 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. About the Authors The integration of psychological, social, and biological components of human sexuality in this textbook is facilitated by the blending of the authors’ academic and professional backgrounds. Robert Crooks had a Ph.D. in psychology. His graduate training stressed clinical and physiological psychology. Sociology served as his minor throughout his graduate training. His involvement with teaching human sexuality classes at university, college, and medical school spanned over two decades. In addition, Bob and his wife, Sami Tucker, developed and implemented training programs in order for Kenyans to provide HIV/ AIDS peer educator interventions in their communities. Karla Baur has retired as co-author after 13 editions. During her professional life she earned a master’s degree in clinical social work and had a private practice, specializing in couples and sex therapy. She taught human sexuality and female sexuality courses at Portland Community College, Portland State University, and Clark College. At Oregon Health Sciences University she taught human sexuality courses and coached medical students in taking sexual histories with patients. She has been certified as a sex educa- tor, therapist, and sex therapy supervisor by the American Association of Sex Educators, Counselors, and Therapists. Karla also trained HIV/AIDS prevention peer educators in Bob’s program in Kenya. Laura Widman has a Ph.D. in Clinical Psychology and postdoctoral training in HIV/STD prevention. She is currently an Associate Professor of Psychology at North Carolina State University. She has an active program of research focused on adolescent sexuality, with a particular interest in developing and testing technology-based programs to reduce HIV/STDs and improve the sexual health of youth. Laura has authored more than 50 manuscripts and book chapters, and she has presented her work to national and international audiences. She has taught undergraduate courses in human sexuality using the Our Sexuality textbook for over 10 years. She is delighted to be joining the authorship team to contribute to the 14th edition of this book. Laura was invited to join Our Sexuality as author subsequent to Bob Crooks’ death. Cengage is extremely fortunate to find Laura. She is skillfully and enthusiastically carry- ing the spirit of Our Sexuality forward while further improving it with new expertise and perspective. v Copyright 2021 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. Copyright 2021 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. Brief Contents Prologue xxxii 1 Perspectives on Sexuality 1 2 Sex Research: Methods and Challenges 25 3 Female Sexual Anatomy and Physiology 45 4 Male Sexual Anatomy and Physiology 83 5 Gender Issues 106 6 Sexual Arousal and Response 140 7 Love and Communication in Intimate Relationships 171 8 Sexual Behaviors 214 9 Sexual Orientations 239 10 Contraception 266 11 Conceiving Children: Process and Choice 301 12 Sexuality During Childhood and Adolescence 337 13 Sexuality and the Adult Years 363 14 Sexual Difficulties and Solutions 390 15 Sexually Transmitted Infections 424 16 Atypical Sexual Behavior 467 17 Sexual Coercion 480 18 Sex for Sale 516 vii Copyright 2021 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. Copyright 2021 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it.