CAS PS 231 Lecture Notes - Lecture 15: Walter Bradford Cannon, Temporal Lobe, Twin Study

• School: Boston University
• Department: Psychological & Brain Sciences
• Course: CAS PS 231
• Professor: James Cherry

Document Summary

Autism a childhood-onset disorder characterized by social, cognitive and motor defects. Until 1970"s, many considered it the former. Dsm-4: one of a category of developmental disorders. Pervasive developmental disorders - not otherwise specified (ppd-nos) Dsm-5: all categories now included under autism spectrum disorders. Classifications now based on severity level (1, 2, 3, etc) 4-5x m>f, but this varies depending on the form and severity. However, in cdd, symptoms don"t emerge until childhood (after 2-3 until 10) Defective social interactions (failure to develop normal social relationships) Often accompanied by mental retardation and slow language devopment. Unable to project or interpret feelings and thoughts of others: This ability is referred to as the theory of mind (tom) Tom is often stated to emerge by age 4, but depending on the type of test given, evidence of it is seen earlier or later. 50-90% concordance in mz twins; only up to 10% in dz.