Briggs, Bill, and Jason Blevins. "A Boy with Many Sides." Denver Post, Denver Post, May 2, 1999. May 2, 1999.

Brooks, David. "Columbine: Parents of a Killer." New York Times, New York Times, May 15, 2004. May 15, 2004.

Dykeman, Nate. "More Insight on Dylan Klebold." Interview of Nate Dykeman by Charles Gibson. Good Morning America, Good Morning America, ABC, April 30, 1999. ABC, April 30, 1999.

Emery, Erin, Steve Lipsher, and Ricky Young. "Video, Poems Foreshadowed Day of Disaster." Denver Post, Denver Post, April 22, 1999. April 22, 1999.

Gibbs, Nancy, and Timothy Roche. "The Columbine Tapes." Time, Time, December 12, 1999. December 12, 1999.

Johnson, Dirk, and Jodi Wilgoren. "The Gunman: A Portrait of Two Killers at War with Themselves." New York Times, New York Times, April 26, 1999. April 26, 1999.

Johnson, Kevin, and Larry Copeland. "Long-Simmering Feud May Have Triggered Massacre." USA Today, USA Today, April 22, 1999. April 22, 1999.

Kurtz, Holly. "Klebold Paper Foretold Deadly Rampage." Rocky Mountain News, Rocky Mountain News, November 22, 2000. November 22, 2000.

Lowe, Peggy. "Facts Clarify but Can't Justify Killers' Acts." Denver Post, Denver Post, March 12, 2000. March 12, 2000.

Prendergast, Alan. "Doom Rules: Much of What We Know About Columbine Is Wrong." Westword, Westword, August 5, 1999. August 5, 1999.

------. "I'm Full of Hate and I Love It." Westword, Westword, December 6, 2001. December 6, 2001.

Russakoff, Dale, Amy Goldstein, and Joel Achenbach. "Shooters' Neighbors Had Little Hint." Washington Post, Washington Post, May 2, 1999. May 2, 1999.

Simpson, Kevin, and Jason Blevins. "Mystery How Team Players Became Loners." Denver Post, Denver Post, April 23, 1999. April 23, 1999.

Simpson, Kevin, Patricia Callahan, and Peggy Lowe. "Life and Death of a Follower." Denver Post, Denver Post, May 2, 1999. May 2, 1999.

Wilgoren, Jodi, and Dirk Johnson. "The Suspects: Sketch of Killers; Contradictions and Confusion." New York Times, New York Times, Friday April 23, 1999. Friday April 23, 1999.

PSYCHOPATHY.

Babiak, Paul, and Robert D. Hare. Snakes in Suits: When Psychopaths Go to Work Snakes in Suits: When Psychopaths Go to Work. New York: HarperCollins, 2006.

Barry, Tammy D., Christopher T. Barry, Annie M. Deming, and John E. Lochman. "Stability of Psychopathic Characteristics in Childhood: The Influence of Social Relationships." SAGE Publications, Thousand Oaks, CA. Criminal Justice and Behavior Criminal Justice and Behavior 35, no. 2 (February 2008): 244-62. 35, no. 2 (February 2008): 244-62.

Cleckley, Hervey. The Mask of Sanity The Mask of Sanity. 1st ed. St. Louis: C. V. Mosby Co., 1941.

------. The Mask of Sanity: An Attempt to Clarify Some Issues About the So-Called Psychopathic Personality The Mask of Sanity: An Attempt to Clarify Some Issues About the So-Called Psychopathic Personality. 5th ed. 1988.

D'Haenen, Hugo, Johan A. Den Boer, and Paul Willner, eds. Biological Psychiatry Biological Psychiatry. 2 vols. New York: Wiley, 2002.

Greely, Henry T. "The Social Effects of Advances in Neuroscience: Legal Problems, Legal Perspectives." In Neuroethics: Defining the Issues in Theory, Practice and Policy, Neuroethics: Defining the Issues in Theory, Practice and Policy, edited by Judy Illes, 245-63. New York: Oxford University Press, 2005. edited by Judy Illes, 245-63. New York: Oxford University Press, 2005.

Hare, Robert D. Hare Psychopathy Checklist--Revised (PCL-R). Hare Psychopathy Checklist--Revised (PCL-R). 2nd ed. Toronto: Multi-Health Systems, 2003. 2nd ed. Toronto: Multi-Health Systems, 2003.

------. Psychopathy (Theory and Research). Psychopathy (Theory and Research). New York: Wiley, 1970. New York: Wiley, 1970.

------. Without Conscience: The Disturbing World of the Psychopaths Among Us Without Conscience: The Disturbing World of the Psychopaths Among Us. New York: Guilford Press, 1999.

------. "Without Conscience." Robert Hare's Web page devoted to the study of psychopathy. http://www.hare.org/.

Hart, Stephen, David N. Cox, and Robert D. Hare. Psychopathy Checklist: Screening Version (PCL:SV) Psychopathy Checklist: Screening Version (PCL:SV). Toronto: Multi-Health Systems, 2003.

Kiehl, K. "Limbic Abnormalities in Affective Processing by Criminal Psychopaths as Revealed by Functional Magnetic Resonance Imaging." Biological Psychiatry Biological Psychiatry 50, no. 9 (November 2001): 677-84. 50, no. 9 (November 2001): 677-84.

Kiehl, Kent A., Alan T. Bates, Kristin R. Laurens, Robert D. Hare, and Peter F. Liddle. "Brain Potentials Implicate Temporal Lobe Abnormalities in Criminal Psychopaths." Journal of Abnormal Psychology Journal of Abnormal Psychology 115, no. 3 (2006): 443-53. 115, no. 3 (2006): 443-53.

Kiehl, Kent A., Andra M. Smith, Adrianna Mendrek, Bruce B. Forster, Robert D. Hare, and Peter F. Liddle. "Temporal Lobe Abnormalities in Semantic Processing by Criminal Psychopaths as Revealed by Functional Magnetic Resonance Imaging." Psychiatry Research: Neuroimaging Psychiatry Research: Neuroimaging 130 (2004): 297-312. 130 (2004): 297-312.

Kosson, David S. "Psychopathy Is Related to Negative Affectivity but Not to Anxiety Sensitivity." Behaviour Research and Therapy Behaviour Research and Therapy 42, no. 6 (June 2004) 697-710. 42, no. 6 (June 2004) 697-710.

Larsson, Henrik, Essi Viding, and Robert Plomin. "Callous-Unemotional Traits and Antisocial Behavior: Genetic, Environmental, and Early Parenting Characteristics." Criminal Justice and Behavior Criminal Justice and Behavior 35, no. 2 (February 2008): 197-211. 35, no. 2 (February 2008): 197-211.

Millon, Theodore, and Roger D. Davis. Psychopathy: Antisocial, Criminal, and Violent Behavior Psychopathy: Antisocial, Criminal, and Violent Behavior. New York: Guilford Press, 1998.

Millon, Theodore, Erik Simonsen, Roger D. Davis, and Morten Birket-Smith. "Ten Subtypes of Psychopathy." In Millon and Davis, Psychopathy: Antisocial, Criminal, and Violent Behavior Psychopathy: Antisocial, Criminal, and Violent Behavior, pp. 161-70.

Moran, Marianne J., Michael G. Sweda, M. Richard Fragala, and Julie Sasscer-Burgos. "The Clinical Application of Risk Assessment in the Treatment-Planning Process." International Journal of Offender Therapy and Comparative Criminology International Journal of Offender Therapy and Comparative Criminology 45, no. 4 (2001): 421-35. 45, no. 4 (2001): 421-35.

Newman, Joseph P. "The Reliability and Validity of the Psychopathy Checklist--Revised in a Sample of Female Offenders." Criminal Justice and Behavior Criminal Justice and Behavior 29, no. 2 (2002): 202-31. 29, no. 2 (2002): 202-31.

Oxford English Dictionary, s.v. "psychopath." 1989. (Indication of first use.) s.v. "psychopath." 1989. (Indication of first use.) Patrick, Christopher J., ed. Handbook of Psychopathy Handbook of Psychopathy. New York: Guilford Press, 2007.

Ramsland, Katherine. "Dr. Robert Hare: Expert on the Psychopath." Crime Library. http://www.trutv.com/library/crime/criminal_mind/psychology/robert_hare/index.html.

Stone, Michael H. "Sadistic Personality in Murderers." In Millon and Davis, Psychopathy: Antisocial, Criminal, and Violent Behavior, Psychopathy: Antisocial, Criminal, and Violent Behavior, pp. 346-55. pp. 346-55.

JUVENILE P PSYCHOPATHY.

Forth, Adelle, David Kosson, and Robert D. Hare. Psychopathy Checklist: Youth Version (PCL:YV) Psychopathy Checklist: Youth Version (PCL:YV). Toronto: Multi-Health Systems, 2003.

Glenn, Andrea L., Adrian Raine, Peter H. Venables, and Sarnoff A. Mednick. "Early Temperamental and Psychophysiological Precursors of Adult Psychopathic Personality." Journal of Abnormal Psychology Journal of Abnormal Psychology 116, no. 3 (2007): 508-18. 116, no. 3 (2007): 508-18.

Loeber, Rolf, David P. Farrington, Magda Stouthamer-Loeber, Terrie E. Moffitt, Avshalom Caspi, and Don Lynam. "Male Mental Health Problems, Psychopathy, and Personality Traits: Key Findings from the First 14 Years of the Pittsburgh Youth Study." Clinical Child and Family Psychology Review Clinical Child and Family Psychology Review 4, no. 4 (December 2001): 273-97. 4, no. 4 (December 2001): 273-97.

Lynam, Donald R., Rolf Loeber, and Magda Stouthamer-Loeber. "The Stability of Psychopathy from Adolescence into Adulthood: The Search for Moderators." Criminal Justice and Behavior Criminal Justice and Behavior 35, no. 2 (February 2008): 228-43. 35, no. 2 (February 2008): 228-43.

Munoz, Luna C., Margaret Kerr, and Nejra Besic. "The Peer Relationships of Youths with Psychopathic Personality Traits: A Matter of Perspective." Criminal Justice and Behavior Criminal Justice and Behavior 35, no. 2 (February 2008): 212-27. 35, no. 2 (February 2008): 212-27.

Murrie, D., D. Cornell, S. Kaplan, S. McConville, and A. Levy Elkon. "Psychopathy Scores and Violence Among Juvenile Offenders: A Multi-measure Study." Behavioral Sciences and the Law Behavioral Sciences and the Law 22 (2004): 49-67. 22 (2004): 49-67.

Pardini, Dustin A., and Rolf Loeber. "Interpersonal Callousness Theories Across Adolescence Early Social Influences and Adult Outcomes." Criminal Justice and Behavior Criminal Justice and Behavior 35, no. 2 (February 2008): 173-96. 35, no. 2 (February 2008): 173-96.

Salekin, Randall T., and John E. Lochman. "Child and Adolescent Psychopathy: The Search for Protective Factors." Criminal Justice and Behavior Criminal Justice and Behavior 35, no. 2 (February 2008): 159-72. 35, no. 2 (February 2008): 159-72.

Vitacco, Michael J., Craig S. Neumann, Michael F. Caldwell, Anne-Marie Leistico, and Gregory J. Van Rybroek. "Testing Factor Models of the Psychopathy Checklist: Youth Version and Their Association with Instrumental Aggression." Journal of Personality Assessment Journal of Personality Assessment 87, no. 1 (2006): 74-83. 87, no. 1 (2006): 74-83.

Vitacco, Michael J., and Gina M. Vincent. "Understanding the Downward Extension of Psychopathy to Youth: Implications for Risk Assessment and Juvenile Justice." International Journal of Forensic Mental Health International Journal of Forensic Mental Health 5, no. 1 (2006): 29-38. 5, no. 1 (2006): 29-38.

PSYCHOPATHY T TREATMENT.

Caldwell, Michael F., David J. McCormick, Deborah Umstead, and Gregory J. Van Rybroek. "Evidence of Treatment Progress and Therapeutic Outcomes Among Adolescents with Psychopathic Features." Criminal Justice and Behavior Criminal Justice and Behavior 34, no. 5 (2007): 573-87. 34, no. 5 (2007): 573-87.

Caldwell, Michael, Jennifer Skeem, Randy Salekin, and Gregory Van Rybroek. "Treatment Response of Adolescent Offenders with Psychopathy Features: A 2-Year Follow-Up." Criminal Justice and Behavior Criminal Justice and Behavior 33, no. 5 (October 2006): 573-87. 33, no. 5 (October 2006): 573-87.

Caldwell, Michael F., and Gregory J. Van Rybroek. "Efficacy of a Decompression Treatment Model in the Clinical Management of Violent Juvenile Offenders." International Journal of Offender Therapy and Comparative Criminology International Journal of Offender Therapy and Comparative Criminology 45, no. 4 (2001): 469-77. 45, no. 4 (2001): 469-77.

Caldwell, Michael F., Michael Vitacco, and Gregory J. Van Rybroek. "Are Violent Delinquents Worth Treating? A Cost-Benefit Analysis." Journal of Research in Crime and Delinquency Journal of Research in Crime and Delinquency 43, no. 2 (May 2006): 148-68. 43, no. 2 (May 2006): 148-68.

Cohen, Mark A., Roland T. Rust, and Sara Steen. "Prevention, Crime Control or Cash? Public Preferences Towards Criminal Justice Spending Priorities." Justice Quarterly Justice Quarterly 23, no. 3 (September 2006): 317-35. 23, no. 3 (September 2006): 317-35.

Skeem, Jennifer L., John Monahan, and Edward P. Mulvey. "Psychopathy, Treatment Involvement, and Subsequent Violence Among Civil Psychiatric Patients." Law and Behavior Law and Behavior 26, no. 6 (December 2002): 577-603. 26, no. 6 (December 2002): 577-603.

Wong, Stephen C. P., and Robert D. Hare. Guidelines for a Psychopathy Treatment Program Guidelines for a Psychopathy Treatment Program. Toronto: Multi-Health Systems, 2006.

OTHER M MENTAL H HEALTH.

American Psychiatric Association. Desk Reference to the Diagnostic Criteria from DSM-IV-TR Desk Reference to the Diagnostic Criteria from DSM-IV-TR. Arlington, VA: American Psychiatric Publishing, 2000.

Anderson, Scott. "The Urge to End It." New York Times Magazine, New York Times Magazine, July 6, 2008. July 6, 2008.

Ekman, Paul. Telling Lies: Clues to Deceit in the Marketplace, Politics, and Marriage Telling Lies: Clues to Deceit in the Marketplace, Politics, and Marriage. 2nd rev. ed. New York: Norton, 2001.

Millon, Theodore, and Roger D. Davis. Disorders of Personality: DSM-IV and Beyond Disorders of Personality: DSM-IV and Beyond. New York: Wiley, 1996.

Ochberg, Frank. "PTSD 101." DART Center for Journalism and Trauma. http://www.dartcenter.org/articles/special_features/ptsd101/00.php.

SURVIVORS: MEMOIRS AND I INTERVIEW T TRANSCRIPTS.

Bernall, Brad, and Misty Bernall. "Columbine Victim Cassie Bernall's Story." Interview by Peter Jennings. World News Tonight, World News Tonight, ABC, April 26, 1999. ABC, April 26, 1999.

Bernall, Misty. She Said Yes: The Unlikely Martyrdom of Cassie Bernall She Said Yes: The Unlikely Martyrdom of Cassie Bernall. Farmington, PA: Plough Publishing, 1999.

Brown, Brooks, and Rob Merritt. No Easy Answers: The Truth Behind Death at Columbine No Easy Answers: The Truth Behind Death at Columbine. Herndon, VA: Lantern Books, 2002.

Carlston, Liz. Surviving Columbine: How Faith Helps Us Find Peace When Tragedy Strikes Surviving Columbine: How Faith Helps Us Find Peace When Tragedy Strikes. Salt Lake City: Shadow Mountain, 2004.

Ireland, Patrick. "The Boy in the Window." Interview by Diane Sawyer. 20/20, 20/20, ABC, September 29, 1999. ABC, September 29, 1999.

------. "Headline Follow-ups: What's Happened in the Aftermath of Explosive News Stories." Oprah Winfrey Show, Oprah Winfrey Show, May 22, 2002. May 22, 2002.

Kirklin, Lance, and Sean Graves. Interview by Barbara Walters. 20/20, 20/20, ABC, October 1, 1999. ABC, October 1, 1999.

Lindholm, Marjorie. A Columbine Survivor's Story A Columbine Survivor's Story. Littleton, CO: Regenold Publishing, 2005.

Nimmo, Beth. The Journals of Rachel Scott: A Journey of Faith at Columbine High The Journals of Rachel Scott: A Journey of Faith at Columbine High. Adapted by Debra K. Klingsporn. Nashville: Thomas Nelson, 2001.

Saltzman, Marilyn, and Linda Lou Sanders. Dave Sanders: Columbine Teacher, Coach, Hero Dave Sanders: Columbine Teacher, Coach, Hero. Philadelphia: Xlibris Corporation, 2004.

Sanders, Angela. "Angie Sanders Talks About Her Father, Only Teacher to Die in Colorado School Shooting, Who Is Now Being Remembered for His Bravery." Today Show, Today Show, NBC News, April 22, 1999. NBC News, April 22, 1999.

Scott, Darrell, Beth Nimmo, with Steve Rabey. Rachel's Tears: The Spiritual Journey of Columbine Martyr Rachel Scott. Rachel's Tears: The Spiritual Journey of Columbine Martyr Rachel Scott. Nashville: Thomas Nelson, 2000. Nashville: Thomas Nelson, 2000.

Taylor, Mark. I Asked, God Answered: A Columbine Miracle I Asked, God Answered: A Columbine Miracle. Mustang, OK: Tate Publishing, 2006.

SURVIVORS: NEWS A ACCOUNTS.

Bartels, Lynn. "Mom Had Been Hospitalized for Depression: Carol [sic] Hochhalter Had Struggled with Depression for Three Years." Rocky Mountain News, Rocky Mountain News, October 26, 1999. October 26, 1999.

------. "Some Families Arguing over Money: Accountability, Means of Distribution Lead List." Rocky Mountain News, Rocky Mountain News, May 26, 1999. May 26, 1999.

------. "A Story of Healing and Hope: Faith and Friends Helped Paralyzed Student Overcome a 'Very Dark Place.'" Rocky Mountain News, Rocky Mountain News, April 20, 2004. April 20, 2004.

Callahan, Patricia. "Dream Turns to Nightmare." Denver Post, Denver Post, April 22, 1999. April 22, 1999.

Michalik, Connie, and Jo Anne Doherty. "Connie Michalik and Jo Anne Doherty Discuss Death of Carla Hochhalter, Mother of Paralyzed Columbine Shooting Victim." Interview by Charles Gibson. Good Morning America, Good Morning America, ABC News, October 25, 1999. ABC News, October 25, 1999.

Curtin, Dave. "Suicide, Arrest Spur Columbine Calls." Denver Post, Denver Post, October 24, 1999. October 24, 1999.

"Distribution Plan." Rocky Mountain News, Rocky Mountain News, July 3, 1999. July 3, 1999.

Edwards, Bob, anchor, and Andrea Dukakis, reporter. "Controversy over How to Spend the Millions of Dollars Donated Since the Columbine High School Shooting." Morning Edition, Morning Edition, NPR, June 22, 1999. NPR, June 22, 1999.

Fox, Ben. "School Shooting Suspects Appear in Court." Associated Press, March 26, 2001.

"Grace Under Fire: Columbine High School Teacher Dave Sanders Dies a Hero, Saving the Lives of Others." 48 Hours, 48 Hours, CBS News, April 22, 1999. CBS News, April 22, 1999.

Green, Chuck. "Columbine Receives, Asks More." Denver Post, Denver Post, March 31, 2000. March 31, 2000.

------. "Enough Milking of Tragedy." Denver Post, Denver Post, April 3, 2000. April 3, 2000.

Johnson, Dirk. "The Teacher: As They Mourn, They Are Left to Wonder." New York Times, New York Times, April 28, 1999. April 28, 1999.

Kurtz, Holly. "Columbine-Area Groups Reap Funds: Nine Agencies, Charities to Use Money for Victim Counseling, Anti-violence Teen Programs." Rocky Mountain News, Rocky Mountain News, August 14, 1999. August 14, 1999.

------. "Healing Fund Gives to Families: Columbine Victims Satisfied with Plan; Half of Distribution Goes to Students, Staff." Rocky Mountain News, Rocky Mountain News, July 3, 1999. July 3, 1999.

Lowe, Peggy. "Aired Video Irks Sheriff." Denver Post, Denver Post, October 14, 1999. October 14, 1999.

------. "Columbine: They Are 5A Champions; Team Triumphs After Tragedy." Denver Post, Denver Post, December 5, 1999. December 5, 1999.

Lowe, Peggy, and Kieran Nicholson. "CBS Airs Cafeteria Tape." Denver Post, Denver Post, October 13, 1999. October 13, 1999.

Obmascik, Mark. "Healing Begins: Colorado, World Mourn Deaths at Columbine High." Denver Post, Denver Post, April 22, 1999. April 22, 1999.

Olinger, David, Marilyn Robinson, and Kevin Simpson. "Columbine Victim's Mom Kills Herself: Community Grief Continues with Pawnshop Suicide." Denver Post, Denver Post, October 23, 1999. October 23, 1999.

Paterniti, Michael. "Columbine Never Sleeps." GQ, GQ, April 2004, pp. 206-20. April 2004, pp. 206-20.