Psychology is designed to meet scope and sequence requirements for the single-semester introduction to psychology course. The book offers a comprehensive treatment of core concepts, grounded in both classic studies and current and emerging research. The text also includes coverage of the DSM-5 in examinations of psychological disorders. Psychology incorporates discussions that reflect the diversity within the discipline, as well as the diversity of cultures and communities across the globe.Senior Contributing AuthorsRose M. Spielman, Formerly of Quinnipiac UniversityContributing AuthorsKathryn Dumper, Bainbridge State CollegeWilliam Jenkins, Mercer UniversityArlene Lacombe, Saint Joseph's UniversityMarilyn Lovett, Livingstone CollegeMarion Perlmutter, University of Michigan

By the end of this section, you will be able to:Describe the nature and symptoms of posttraumatic stress disorderIdentify the risk factors associated with this disorderUnderstand the role of learning and cognitive factors in its development

What stresses you out? What is stress and how does it affect our body? In this lecture, we will examine stress, the neural substrates of stress, and the ways in which stress manifests itself physically and emotionally.

A brief introduction to the most common features of posttraumatic stress disorder. Duration: 2:20.