Classification Part 1 Flashcards
Classification
- Important activity in clinical work and research
- Basic part of science
- Information made more accessible, meaningful, and less cumbersome
Defining abnormal vs. normal
we have more information about abnormal behaviour than normal (easier to say what’s abnormal than what’s normal)
Steps in defining abnormal
- into subclasses
- starts out as binary (ie. abnormal vs. normal)
- then can break it down further (ie. Mushrooms: flower vs. mushroom -> poisonous vs. not)
Paradigms and classification
- Paradigms are sets of assumptions that outline the universe of scientific inquiry
- Paradigms have influenced how classification done and what was classified
- Ex. Hippocrates’ Four humors
Philosophical Issues in Abnormal Behaviour Paradigms
- Nature of psychopathy, normalcy, belief in paradigm
- Historical
- Emil Kraeplin and Neo-Kraeplians
- Freud
- Contemporary
- DSM & International Classification of Diseases (ICD)
- PDM & OPDS
Back Masking
Believing that something is in an ambiguous stimulus, and finding it because you’re looking for it
2 major classification trends/philosophies
- Symptom as Focus (Kraeplin)
- Underlying Cause as Focus (Freud)
Symptom as Focus
- Group of symptoms or observable behaviours (ie. Knee pain)
- Seen as cause of difficulties
- Issue: what if pain is not the problem?
- Focus of assessment & treatment is on eradicating the symptoms
- Collect symptoms, call it something (ie. Depression), try to get rid of the symptoms and your job is done
- Approach done by Behaviourism school, ICD, DSM
- Variant embraced by Managed Care in US (insurance companies)
Underlying Cause as Focus
- Problems caused by underlying process (ie. Broken knee bone)
- Assessment and treatment focuses on underlying process (ie. Focus on healing broken bone and pain will go away too)
- Issue: based on what are thought to be the causes
- Orientation of psychodynamic, cognitive behavioural, and PDM
- Today, there’s been a shift from symptom as focus to underlying cause as focus
7 Purposes of Classification
- Description and need to identify
- Communication (by classifying a “depressive episode”, we can communicate what it is to others)
- Research (by classifying PTSD, we can design studies about PTSD)
- Treatment (leads to it)
- Insurance (some things covered, others aren’t)
- Theory development (theories based on class. systems)
- Epidemiological info (classification helpful for figuring out increases vs. decreases)
Diagnosis and treatment
- Diagnosis does not always lead to proper treatment:
- Ex. Alzheimer’s -> only correct diagnosis happens post-mortem
DSM
- Categorical/binary approach to define abnormality (you either have it or you don’t)
- Revised periodically
- Over 400 disorders
- DSM provides descriptive information not based on any one theoretical perspective (although this is debatable)
- Descriptive features are based on observable features
2 categories of Diagnostic Manuals
- Ones used for diagnosis -> DSM, ICD: descriptive, categorical (Kraeplinian)
- Ones used for formulation -> Psychodynamic Diagnostic Manual (PDM) and Operationalized Psychodynamic Diagnosis (OPD)
Diagnosis vs. Formulation
- Diagnosis: Assigning diagnostic category (assigning a label)
- structural interview -> diagnosis
- Formulation: Attempt to explain genesis, maintenance, and process related information for treatment (unique model of how a particular person functions)
- Assessment -> formulation
PDM (Psychodynamic Diagnostic Manual)
- States that DSM provides one level of description, but the PDM describes elements not found in DSM; providing info to improve comprehensive treatments
- Supplements DSM
- Developed from a theoretical perspective (Current Psychodynamic Theory)
- Ex. Psychoanalysis
- Ex. Object Relations
- Ex. Attachment Theory