psychometric tests mrcpsych paper 1 dr a davies st4 general adult psychiatry
TRANSCRIPT
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Psychometric Tests
MRCPsych Paper 1Dr A Davies
ST4 General Adult Psychiatry
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Aims
• Overview of psychometric tests
• FAR too many to cover in one lecture…focus on common ones
• Past paper questions
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Hundreds of psychometric tests…
• Mood • Psychosis• Cognitive impairment• Perinatal • Eating disorders • Side effects • Neuropsychiatric• …..
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Beck’s Depression Inventory • Self rated 21 multiple-choice questions
• Measures severity of depression
• Each answer scored on a scale value of 0 to 3
• Higher scores = more severe depressive symptoms
0-13 Minimal14–19 Mild 20–28 Moderate29–63 Severe
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PHQ-9• Patient Health Questionnaire – 9• Used to monitor severity of depression and
response to treatment• Self-administered• 9 questions (!) score 0-3, total 27
Depression Severity: 0-4 none5-9 mild10-14 moderate15-19 mod/severe20-27 severe
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HAM-D
• Hamilton Rating Scale for Depression
• Assess severity, mostly biological sx
• Clinical interview
• 17 - 21 items, scored on 3 or 5 point scale
• 0-7 = normal
• 20 + or higher indicate moderate, severe, or very severe depression
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Zung SRDS• Zung Self Rating Depression Scale • Assesses severity of depression• 20 items self rated• Affective, psychological & somatic symptoms• Scored 1-4, total 80
20-44 Normal45-59 Mildly depressed60-69 Moderately depressed70+ Severely depressed
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MADRS
• Montgomery Asberg Depression rating scale• 10 items• Most sensitive to change• Requires clinical interview like HDRS
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VAS
• Visual Analogue Scale• Easy• 10cm line, indicate where mood lies
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GDS
• Geriatric Depression Scale• 30-items, “yes, no” answers• Self report assessment• Assess severity, monitor Rx• Not diagnostic
0-9 normal10-19 mildly depressed20-30 severely depressed
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EPDS
• Edinburgh Postnatal Depression Scale
• Screen for depression (not diagnostic) post-natally (up to 8 wks)
• Self-rated scale, mood over past week
• 10 questions, scored 0-3
0-9 : Mild distress10-12 : Moderate distress - repeat
in 2 wks 13 +: Referral to psychiatry/ology
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Y-BOCS
• Yale-Brown Obsessive Compulsive Scale• Assess severity and monitor improvement of OCD symptoms• Clinician-rated, 10-item scale• Each item rated from 0 (no symptoms) to 4 (extreme symptoms)
0–7 sub-clinical8–15 mild16–23 moderate24–31 severe32–40 extreme
(Self rated version has been developed)
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ACE-R• Brief bedside screening for cognitive problems
• Maximum score of 100 weighted as follows:
Orientation 10Attention 8Memory 35Verbal fluency 14Language 28Visuospatial 5
• High sensitivity in detecting dementia
• 79% with cut-off score of 83 and 93% with cut-off 88.
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SCI-D
• Structured Clinical Interview for DSM-IV • Diagnostic, clinician rated interview
• SCID-I - Axis I Disorders; major mental disorders• SCID-II - Axis II disorders; personality disorders
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Eating Disorder Inventory
• EDI-3 – standardised clinical evaluation of symptoms associated with eating disorders
• 91 items organized into 12 primary scales+: Drive for Thinness BulimiaBody Dissatisfaction Low Self-EsteemPersonal Alienation Interpersonal Insecurity Interpersonal Alienation Interoceptive DeficitsEmotional Dysregulation PerfectionismAsceticism Maturity Fears
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SCOFF• Screening questionnaire for anorexia/bulimia
Do you make yourself Sick because you feel uncomfortably full?
Do you worry you have lost Control over how much you eat?
Have you recently lost more than One stone ina 3 month period?
Do you believe yourself to be Fat when otherssay you are too thin?
Would you say that Food dominates your life?
One point for every “yes”A score of ≥2 indicates a likely case of anorexia nervosa or bulimia
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Alcohol Scales
CAGE – score 2+ indicates problem
AUDIT – Alcohol Use Disorders Identification Test
MAST – Michigan Alcohol Screening Test
CIWA – Clinical Institute Withdrawal Assessment for Alcohol
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MMSE
• Screening tool of cognitive functionPoints per section:
Orientation 10Registration 3Attention & calculation 5Recall 3
Language 8Copying 1
• Scores: 25-30 normal, 21-24 mild, 10-20 moderate, <10 severe impairment
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CIDI• WHO Composite International Diagnostic Interview• Structured interview for psychiatric disorders• Designed for epidemiological studies
• Allows the investigator to:- Measure prevalence of mental disorders- Measure severity of disorders- Determine the burden of these disorders- Assess service use- Assess the use of medications - Assess who is treated, who remainsuntreated, and what are the barriers to treatment
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GHQ
• General Health Questionnaire• Screening tool to identify minor psychiatric
disorders in general population - “caseness”• Several versions, GHQ28 most popular • 28 item assesses somatic symptoms, anxiety &
insomnia, social dysfunction & severe depression
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HoNoS
• Health of the Nation Outcome Scale• Routine clinical outcome measure • 12 items measuring behaviour, impairment,
symptoms and social functioning • Completed after routine clinical assessments in
any setting • Variety of uses for clinicians, researchers and
administrators, in particular health care commissioners and providers
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Neuropsychometry
ReliabilityExtent to which a test produces results consistent across various raters (inter-rater) or various instances with same rater (test-retest)
Validity Extent to which a test measures what its supposed to
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Validity
Construct – performance fit with theory
Predictive – extent to which a score on a scale/test predicts scores on some criterion measure
Incremental – used to determine whether a new test will increase the predictive ability beyond that provided by an existing test
Criterion – how well variables predict an outcome based on information from other variables (concurrent if applied at same time)
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Wechsler Adult Intelligence Scale WAIS
• Most widely used IQ test (WISC for children)
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WAIS
Hold tests: measure stored knowledge & skills Eg) vocab, picture completion, NART
Non hold tests:Eg) block design, digit span
Deterioration quotient derived from difference between ‘don’t hold’ and ‘hold’ scores
Hold tests supposed to be resistant to age related decline, so sensitive to organic brain disease such as dementia (refuted)
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Raven’s Progressive Matrices
• Quick IQ test of current performance• Independent of education & cultural influence• General intelligence with visuospatial problem
solving
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Wisconsin Card Sorting
• Wisconsin card sorting test • Stimulus cards of different colour, form and number • Patient has to sort into a group according to single
principle, eg) colour, but not told which just told if right or wrong
• Difficult if frontal lobe or caudate damage and some people with schizophrenia
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Wechsler Memory Scale Revised
• WMS-R
• Most widely used memory test battery for adults
• Yields a memory quotient MQ, corrected for age and generally approximates to WAIS IQ
• Amnesic conditions – disproportionately low MQ but relatively preserved IQ
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Others
• NART National Adult Reading TestPrevious work knowledge before becoming ill – premorbid IQ estimate
• Stroop TestMeasures set shifting abilities and response inhibition Test frontal function and selective attention
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Questions
In MMSE intersecting pentagons primarily assesses which of the following functions?
A. Copying skillsB. Visual retentionC. Constructional praxisD. LanguageE. Orientation
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MCQ
On mini-mental examination, a 74 year old man loses all points on orientation to time and recall while other faculties are intact. How many points has he lost? A. ThirteenB. EightC. SixteenD. SixE. Five
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MCQ
Which one of the following questionnaires can be used to identify psychiatric 'caseness' in general population? a. Structured clinical interview DSM-IVb. GHQ General Health Questionnairec. PSE Present state examinationd. HAM-De. BDI Beck‟s depression inventory
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MCQ
Serial sevens test is most useful to test one’s? a. Inattentionb. Concentrationc. Working memoryd. Short term memorye. IQ
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The Clifton Assessment procedure is used in which of the following situations? a. Care homes for the learning disabledb. Children in foster carec. Schizophrenia rehabilitation unitsd. Residential care for the elderlye. Prisons with high mental health burden
MCQ
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Considering Beck’s depression inventory, which of the following is true?
a. It has 21 itemsb. Refers to symptoms over the last 5 days.c. Maximum score is 42d. Strictly clinician rated scalee. Has no item on suicidal ideas
MCQ
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Which of the following is NOT a component of clock drawing test? a. Placing the hands of the clock correctlyb. Indicating the hour correctly according to instructionsc. Indicating the minutes correctly according to instructionsd. Using numbers 1 to 12 to create the face of a clocke. Being aware of the current time when the test is administered
MCQ
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Which of the following will you use to assess orientation in a hospitalised patient? a. Ability to remember his/her own addressb. Ability to repeat a phone number immediately after reading outc. Ability to correctly identify the doctor when asked to point outd. Ability to recognise pictures of famous personalitiese. Tap the table once whenever the examiner reads letter „E‟ from a random list of alphabets
MCQ
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Copying intersecting polygons in MMSE tests then functions of?
a. Temporal lobesb. Cerebellumc. Frontal lobesd. Hippocampuse. Parietal lobes
MCQ
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Which of the following is not an alcohol assessment tool?
a. AUDITb. CAGEc. SCOFFd. MASTe. CIWA
MCQ
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EMI – Assessment Instruments
1. A 34 year old woman complains of loss of weight and appetite for last 2 months. She has poor sleep and has multiple somatic complaints that started when she and her husband separated 3 months ago. She denies using alcohol.
B – Beck’s depression scale
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EMI – Assessment Instruments
2. A researcher is interested in finding out the degree of self rated psychiatric symptoms in a sample of 125 diabetic outpatients attending an insulin clinic.
D – General Health Questionnaire
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EMI – Assessment Instruments
3. As a part of a new World Mental Health initiative, it is planned to conduct a nationwide survey of mental health burden. It is planned to administer a fully structured instrument through trained non-clinical research workers to ascertain lifetime diagnosis of mental illness.
F – Diagnostic Interview Scale
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EMI – Assessment Instruments
4. A newly constituted mental health trust wants to adopt a common scale for monitoring clinical recovery on discharge across different adult units.
H - HONOS
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EMI – Neuropsychological Tests
A 54 year man presents with a year’s history of steadily progressive personality change.
He has become increasingly apathetic and appears depressed but his main complaint is of increasing frontal headaches. On examination he has word finding difficulties. EEG shows frontal slowing, greater on the left.
You are concerned that he may have an intracranial space occupying lesion.
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EMI – Neuropsychological Tests
Which test would you use to obtain a quick estimate of his current performance IQ?
F – Raven’s progressive matrices
The test indicates that his current performance IQ is in the low average range. Which test would enable you to estimate his IQ before any brain damage he may have sustained in recent months/years?
E - NART
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EMI – Neuropsychological Tests
The estimate of his premorbid IQ is 15 points higher than his current performance IQ. It is recommended that he has a full WAIS IQ assessment to measure both performance and verbal IQ. On the WAIS his verbal IQ is found to be impaired over and above his performance IQ. Which test is part of the WAIS verbal subtests?
B – Digit Span
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EMI – Neuropsychological Tests
An MRI scan shows a large meningioma compressing dorsolateral prefrontal cortex on the left. Which test result is most likely to be impaired?
J – Wisconsin Card Sorting Test
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