PSYC 2030U Lecture Notes - Lecture 4: Fetus, Heart Failure, Operant Conditioning
Document Summary
Dsm classification: (diagnostic and statistical manual of the american psychiatric. Goals of the dsm-5: address gaps in diagnoses, update criteria based on new research knowledge, reduce the number of not otherwise specified (nos) classifications because too generic, add dimensions to categorical systems, streamline and simplify diagnoses. Key concepts in classification: epidemiology study of frequency of disorders in populations, prevalence proportion of people who have a diagnosis at any given time. When prevalence rates rise dramatically, there is concern normal" individuals being incorrectly diagnosed: comorbidity defined as the co-occurrence of different disorders. Considered major issue due to making treatment planning more difficult. High co-morbidity raises concerns that the disorder is not distinct. Continuity between normal and abnormal behavior not taken into consideration. Advantages of categorical vs. dimensional classification: dimensional: most helpful hen disorder has levels (mild-severe), less comorbidity since measures are on a continuum, not all or none, categorical: if need to know if person either has/does not have disorder.