Comprehensive Notes on Psychological Assessments (From Transcript)

Characteristics and Foundations of Psychological Assessments

  • Psychological assessment: a broad range of measurement techniques involving obtaining scorable information about an individual’s psychological functioning.

    • Purposeful variations exist across methods depending on how clinicians intend to use the information.
    • Key types:
    • Diagnostic assessment: provides a diagnosis or tentative diagnosis of a psychological disorder.
    • Forensic assessments: used in criminal cases where legal determinations rely on psychologue findings.
    • Employment assessments: information used by employers to evaluate job applicant suitability.

  • Reliability and validity (Psychometric basics)

    • Reliability: a test should yield the same results regardless of when it is administered and should elicit consistent responses within the same subscale.
    • Validity: the extent to which a test measures what it is designed to measure.
    • Standardization: clear instructions for administration and scoring to ensure consistency across uses.
    • Diversity considerations: clinicians must consider the test’s applicability to a diverse population and choose the most appropriate instrument for a given client.

  • Evidence-based assessment (EBA)

    • Definition: assessment methods that maximize diagnostic accuracy, inform treatment planning, and optimize time and resources.
    • Core principles:
    • Rely on research findings and scientifically viable theories.
    • Use psychometrically strong measures.
    • Empirically evaluate the assessment process.
    • Note: as norms expand to include broader gender identities, clinicians should incorporate newer instruments normed for these populations.

Clinical Interview

  • Clinical interview (definition): a series of questions administered in face-to-face interaction.

  • Unstructured interview:

    • Open-ended questions about symptoms, health, family background, life history, and reasons for seeking help.
    • Lacks a preset order; clinicians may have preferences about question order and wording.

  • Areas Covered in a Clinical Interview (Table 2)

    • Demographics: age, gender, race, sexual orientation, pronouns.
    • Reason for referral: client’s stated motivation for seeking help.
    • Education and work history: socioeconomic context and occupational/educational background.
    • Current social situation: relationship status and social support.
    • Cultural considerations: gender identity, religious/spiritual identity, racial identity, languages, nationality, immigration status, etc., to aid cultural formulation.
    • Physical and mental health history: medical illnesses, recent health changes, past diagnoses and treatments and their effectiveness.
    • Drug/alcohol use and current medications: psychoactive substances, prescription list to assess interactions.
    • Family history: medical and psychological disorders relevant to current symptoms.
    • Behavioral observations: note anxiety or mood indicators, attention or compliance difficulties, mental status: apparent age alignment, orientation to time/place/person, unusual motor behaviors.

  • Structured interview:

    • Standardized questions with predetermined wording and order.
    • Advantage: standardized, less clinician-dependent variation.
    • Example: Structured Clinical Interview for DSM-5 Disorders – Clinical Version (SCID-5-CV): provides a step-by-step diagnostic pathway through the DSM-5 process and has empirical support.

  • Mental Status Examination (MSE)

    • Purpose: objective assessment of a client’s behavior and functioning across several domains.
    • Areas assessed include:
    • Appearance, behavior, attitude, thought content, thought processes, perception, mood and affect, cognition, insight, judgment, speech.

Intelligence Testing

  • Purposes of intelligence testing

    • Diagnose learning disabilities.
    • Determine giftedness or intellectual developmental disorder.
    • Predict future academic achievement.
    • Aid diagnosis of neurological/psychiatric disorders as part of broader assessment.
    • Evaluate employee potential.

  • Stanford-Binet Intelligence Scale, Fifth Edition (SB5)

    • Individually administered; widely used for assessing children.
    • Deviation IQ: index of intelligence comparing an individual’s score to the mean of a reference group; mean = 100100, standard deviation extSD=15ext{SD} = 15.
    • SB5 scales:
    • Fluid Reasoning
    • Knowledge
    • Quantitative Reasoning
    • Visual-Spatial Reasoning
    • Working Memory
    • Deviation IQ formula (conceptual):
    • Let XXX be the raw score, and Z be its z-score relative to the normative group:
    • IQ=100+15⋅Z=100+15⋅XXX−μσIQ = 100 + 15\cdot Z = 100 + 15\cdot \frac{XXX - \mu}{\sigma}
    • These scales assess different facets of cognitive ability.

  • Wechsler Intelligence Scales (WAIS-5)

    • WAIS-5: designed to measure adult intelligence; parallel forms exist for children (WISC-V) and for younger ages (WPPSI-IV).
    • Overall score: Full-Scale IQ with a normative mean of 100100 and SD of 1515.
    • Five primary index scales for in-depth cognitive profiling:
    • Verbal Comprehension (knowledge gained from education; crystallized intelligence).
    • Visual Spatial (problem solving with visual/pictorial material).
    • Fluid Reasoning (novel/problem-solving abilities, often nonverbal/mathematical).
    • Working Memory (storage, transformation, and retrieval of information in short-term memory).
    • Processing Speed (speeded nonverbal symbol tasks).
    • Examples of subtests (typical):
    • Verbal: Similarities, Vocabulary
    • Visual-Spatial: Block Design, Visual Puzzles
    • Fluid Reasoning: Matrix Reasoning, Figure Weights, Arithmetic, Set Relations
    • Working Memory: Digit Span (forward/backward), Letter-Number Sequencing
    • Processing Speed: Coding, Symbol Search, Naming Speed

  • WAIS-5 Structure (text alternative overview)

    • Full-scale IQ points to primary index scales; arrows indicate subtests feeding into each index.

Personality Testing

  • Self-report tests: standardized questions with fixed response options completed by the client.

    • Minnesota Multiphasic Personality Inventory-3 (MMPI-3):
    • 335 true/false items; describes thoughts, behaviors, feelings, attitudes.
    • Widely used self-report clinical instrument.
    • MMPI-3 uses a broader normative sample for diversity.

  • Other self-report inventories

    • SCL-90-R: 90 symptoms rating across physical and psychological domains; sensitive to current state; useful for tracking change across treatment.
    • Neo Personality Inventory (NEO-PI-R): 240-item measure of five broad personality traits; scales designed for self and informant (know-taker) input.
    • Personality Inventory for DSM-5 (PID-5): emerging measure; provides scores on personality-disorder-related domains; cross-national utility.

  • MMPI-2 Restructured Clinical (RC) Scales profile (example interpretation)

    • Key scales (abbreviations with full names):
    • RCd: Demoralization
    • RC1: Somatic Complaints (som)
    • RC2: Low Positive Emotions (lpe)
    • RC3: Cynicism (cyn)
    • RC4: Antisocial Behavior (asb)
    • RC6: Persecutory Ideas (per)
    • RC7: Dysfunctional Negative Emotions (dne)
    • RC8: Aberrant Experiences (abx)
    • RC9: Hypomanic Activation (hpm)
    • Example: Profile values (T-scores) show elevations and thematic interpretations; high RC8 (aberrant experiences) may indicate unusual perceptual experiences; RC1 (somatic) and RCd (demoralization) reflect distress and somatic symptom pattern; RC9 (hpm) relates to energy/activation levels.
    • Typical score reporting: Raw scores, T-scores for each RC scale, and interpretation context (e.g., whether elevations indicate clinically meaningful concerns vs. normative variation).

  • Text alternatives and figure notes (for accessibility)

    • Figures include MMPI-2-R profile with scales and scores; Trail Making and WCST items have text alternatives explaining procedures and interpretations.

Projective Testing

  • Projective tests: present ambiguous stimuli or tasks; examine how individuals interpret or respond to reveal inner thoughts/feelings.
    • Rorschach Inkblot Test: respondents describe perceptions of inkblots; aims to probe underlying thought processes and conflicts.
    • Thematic Apperception Test (TAT): respondents create stories about ambiguous pictures; reveals themes, motives, and interpersonal dynamics.
    • Rationale: reduce response bias by eliciting projections of inner experiences.

Behavioral Assessment

  • Behavioral assessment: measurement based on objective recording of observable behavior rather than self-report.

    • Target behavior: the specific behavior of interest to change.
    • Include antecedents (events preceding behavior) and consequences (outcomes of behavior).

  • Assessment methods

    • In vivo observation: in natural contexts (e.g., classroom, home).
    • Analog observations: in controlled settings (e.g., clinic or lab designed for observation).
    • Behavioral self-report: client reports frequency of behaviors.
    • Self-monitoring: client records frequency of specified behaviors.
    • Behavioral interviewing: clinicians query about frequency, antecedents, consequences.

Neuropsychological Assessment

  • Neuropsychological assessment: performance-based methods to understand cognitive consequences of brain damage, disease, or severe mental illness.

    • Measured domains: attention and working memory, processing speed, verbal reasoning and comprehension, visual reasoning, verbal memory, visual memory.
    • Executive functioning: ability to formulate goals, plan, execute, and complete plans effectively.
    • Inhibitory control: focus/attention and resistance to irrelevant information.

  • Brief Screening Tests

    • Mini-Mental State Examination (MMSE): brief screen for suspected neurocognitive disorders.
    • Montreal Cognitive Assessment (MoCA): brief cognitive screen as part of neuropsychological assessment.
    • Saint Louis University Mental Status Exam (SLUMS): sensitive to mild memory loss in older adults; includes tasks on attention, calculation, recall, animal naming, digit span, clock drawing, figure recognition, and paragraph recall.

  • Executive Functioning Tests

    • Trail Making Test (TMT): assesses cognitive flexibility and processing speed by tracing a path among unrelated stimuli.
    • Clock Drawing Test: evaluate planning, sequencing, and visuospatial skills.
    • Wisconsin Card Sorting Test (WCST): assesses abstract thinking and set-shifting abilities.
    • Paced Auditory Serial Addition Test (PASAT): measures processing speed, attention, and numerical calculation under auditory presentation.

  • Neuroimaging and related topics

    • Neuroimaging provides pictures of brain structure and activity to inform clinical interpretation.
    • Techniques:
    • EEG: measures brain electrical activity.
    • CT (computed tomography): X-ray-based structural imaging.
    • MRI: magnetic resonance imaging; uses radio waves to image brain tissue based on water content.
    • PET: positron emission tomography; measures brain activity via radioactive tracer uptake.
    • SPECT: single photon emission computed tomography; detailed imaging variant of PET.
    • MRS: proton magnetic resonance spectroscopy; measures neuronal metabolic activity to indicate brain damage.
    • fMRI: functional MRI; real-time monitoring of brain activity during tasks.
    • DTI: diffusion tensor imaging; investigates white matter integrity.

  • Other neuropsychological measures

    • Boston Naming Test (BNT): word retrieval ability.
    • Glasgow Coma Scale (GCS): measures level of consciousness in response to stimuli.
    • Wechsler Memory Scale, Fourth Edition (WMS-IV): tests of working and long-term memory for visual and verbal stimuli.
    • Adaptive testing: algorithm uses prior responses to tailor subsequent questions.
    • Cambridge Neuropsychological Test Automated Battery (CANTAB): 22 tests across visual memory, working memory, executive function, planning, attention, verbal memory, and decision making/response control.

Accessibility and Text Alternatives

  • Accessibility: some slides include text alternatives for images to accommodate different learners; text alternatives explain figures and items in place of visual content.

Text Alt Details ( WAIS-5 and MMPI-2-R profiles )

  • WAIS-5 structure (text alt): summarizes full-scale IQ, primary index scales, and subtests.

    • Verbal comprehension: Similarities, Vocabulary
    • Visual-spatial: Block Design, Visual Puzzles
    • Fluid reasoning: Matrix Reasoning, Figure Weights, Arithmetic, Set Relations
    • Working memory: Digit Sequencing, Digits Forward, Running Digits, Digits Backward, Letter-Number Sequencing
    • Processing speed: Coding, Symbol Search, Naming Speed Quantity

  • MMPI-2-R Profile (text alt): lists RC scales and corresponding data points (T-scores for each scale, percentile ranks, and highest/lowest observed scores) to facilitate interpretation in accessible formats.

  • Trail Making Test (text alt): description of tracing a path from 1 to 8 with non-sequential numbers; assesses cognitive flexibility.

  • Wisconsin Card Sorting Test (text alt): description of card sorting with varying rules to assess abstract thinking and set-shifting.

Connections and Practical Implications

  • Clinicians integrate multiple assessment modalities (interviews, tests, behavioral measures, neuropsychological tests, and imaging when appropriate) to form a comprehensive picture of a client’s functioning.
  • Evidence-based assessment emphasizes using the best available measures, validated for the population served, and continuously evaluating the assessment process for effectiveness.
  • Norms and standards (e.g., WAIS-5 mean 100, SD 15) guide interpretation and facilitate comparisons across individuals.
  • Cultural and linguistic considerations are central to choosing instruments and interpreting results; up-to-date norms are important for inclusivity (e.g., gender identity norms).
  • Ethical and practical implications include ensuring fair use of tests, avoiding misdiagnosis, and optimizing treatment planning and resource allocation.

Formulas and Key Numbers to Memorize

  • Deviation IQ: IQ=100+15⋅Z=100+15⋅X−μσIQ = 100 + 15 \cdot Z = 100 + 15 \cdot \frac{X - \mu}{\sigma} where μ\mu and σ\sigma are the normative mean and standard deviation.
  • WAIS-5/Wechsler scales: Full-Scale IQ mean = 100100, SD = 1515.
  • SB5 scales: Fluid Reasoning, Knowledge, Quantitative Reasoning, Visual-Spatial Reasoning, Working Memory.
  • MMPI-3: 335 true/false items; broad normative samples; prevalent clinical utility.

Summary Takeaways

  • Psychological assessments combine reliability, validity, standardization, and evidence-based principles to yield clinically useful information.
  • A thorough assessment draws from interviews (structured and unstructured), mental status, cognitive testing (intelligence and neuropsychology), personality measures, projective instruments, behavioral observations, and (where appropriate) neuroimaging.
  • Practical application requires attention to cultural, demographic, and ethical considerations, and interpretation should be grounded in current research and normative data.