Brief ReportsInsomnia, Hypnotic Ability, Negative Affectivity, and the High Risk Model of Threat PerceptionPerlstrom, James R. Ph.D., ABSM1; Wickramasekera, Ian Ph.D.2Author Information 1Greater Washington Sleep Disorders Centers, Rockville, Maryland, and Eastern Virginia Medical School, Norfolk, Virginia. 2Saybrook Institute, San Francisco, and Stanford Medical School, Stanford, California. Send reprint requests to Dr. Wickramasekera, 130 Halsey Court, Hercules, California 94547 or to Dr. Perlstrom, 14915 Broschart Rd., Suite 102, Rockville, Maryland 20850. The Journal of Nervous & Mental Disease: July 1998 - Volume 186 - Issue 7 - p 437-440 Buy © Williams & Wilkins 1998. All Rights Reserved.