Comprehensive History and Application of Psychological Testing and Assessment

1. DISTINGUISHING BETWEEN TESTING AND ASSESSMENT

• Definition of Assessment: A broad array of evaluative procedures yielding information about a person. Procedures include clinical interviews, informal techniques (observation, rating scales), personality tests (objective, projective), and ability tests (achievement, aptitude).
• Definition of Tests: A subset of assessment techniques that yield scores based on collective data gathering (e.g., sum of correct items on a multiple-choice exam).
• Formal vs. Informal Procedures:
  • Formal: Well-researched, scientifically sound, valid, and reliable.
  • Informal: Demonstrate less rigor but may still yield valuable information.
• Holistic Approach: Generally, using multiple assessment procedures yields a clearer "snapshot" of a client and should always be considered when making important life decisions for a client.

2. THE HISTORY OF ASSESSMENT

• Ancient History:
  • Evidence of assessment in the Bible (Abraham’s loyalty assessment).
  • Chinese Government (approx. 2200 B.C.E.): Developed one of the first widely used tests to assess fitness for government positions. Testing was grueling, involving small cubicles; examinees sometimes died from exhaustion. Abolished in 1905.
  • Greeks (Plato, 428–327 B.C.E.): Assessed intellectual and physical ability for state service.
• 1800s Precursors to Modern Testing:
  • Jean Esquirol (1772–1840): Used language ability to identify levels of intelligence in individuals with intellectual disabilities (“idiocy”); forerunning the concept of “Verbal IQ.”
  • Edouard Seguin (1812–1880): Suggested physiological signs (swinging walk, meaningless mouth) indicated worse prognosis for intellectual deficits. Developed the form board (forerunner of "Performance IQ") to increase motor control.
  • Sir Francis Galton (1822–1911): Hypothesized that inherited physical traits (reaction time, grip strength) related to intelligence. His work spurred the development of the correlation coefficient.
  • Wilhelm Wundt (1832–1920): Created “physiological psychology” and developed the first psychological laboratory in Leipzig (1875).
  • James McKeen Cattell (1860–1944): Coined the term mental test and brought statistics to mental testing.
  • G. S. Hall (1844–1924): Founder and first president of the American Psychological Association (1892).

3. THE EMERGENCE OF ABILITY TESTS

• Individual Intelligence Testing:
  • Alfred Binet (1857–1911): Commissioned in 1904 to help integrate "subnormal" children into Paris schools. Developed the first modern intelligence test with Theophile Simon.
  • Lewis Terman (1877–1956): Revised Binet’s work at Stanford to create the Stanford-Binet. First to use the term Intelligence Quotient (IQ).
  • Calculated IQ (Original Ratio Method): $IQ = \frac{\text{Mental Age}}{\text{Chronological Age}} \times 100$
• Group Testing:
  • Robert Yerkes (APA President): Chaired the committee to developed the Army Alpha (1917) for WWI recruit placement. For non-readers/foreign-born, the Army Beta (using pantomime and mazes) was created.
  • SAT: Developed by James Bryant Conant to equalize educational opportunities (Educational Testing Service after WWII).
• Achievement Testing:
  • Edward Thorndike: Pioneer in objective tests of academic performance; led to the Stanford Achievement Test (1923).
• Vocational Counseling:
  • Frank Parsons: Leader in vocational counseling; emphasized self-knowledge and knowledge of work via "true reasoning."
  • General Aptitude Test Battery (GATB): Developed by the U.S. Employment Service to measure multiple aptitudes.

4. THE EMERGENCE OF PERSONALITY AND INFORMAL TESTS

• Interest Inventories:
  • J. B. Miner (1922): Developed one of the first formal interest blanks for high school students.
  • Edward Strong (1884–1963): Developed the Strong Vocational Interest Blank, still widely used today.
• Objective Personality Assessment:
  • Emil Kraeplin: Early word association test for schizophrenia (1880s).
  • Woodworth’s Personal Data Sheet: First modern personality inventory (WWI) to screen recruits for neuroses.
• Projective Testing:
  • Carl Jung (1904): Used word associations (156 stimulus words) to identify "complexes."
  • Herman Rorschach (1884–1922): Developed the Rorschach Inkblot test (10 inkblots).
  • Henry Murray: Developed the Thematic Apperception Test (TAT).
• Informal Assessment:
  • Situational tests: 1930s business hiring approach using contrived naturalistic situations.
  • Clinical Interview: Became prominent as the DSM emerged (first edition in 1952).

5. ETHICAL ISSUES IN ASSESSMENT

• Competence Levels (APA Three-Tier System):
  • Level A: Responsible nonpsychologists who read the manual (e.g., teachers giving achievement tests).
  • Level B: Requires technical knowledge of test construction and advanced coursework (e.g., counselors giving interest inventories).
  • Level C: Requires advanced degree in psychology/licensure and specialized training (e.g., individual intelligence tests, projective tests).
• Confidentiality Exceptions:
  • Client is in danger of harming self or others.
  • Client is a minor/incompetent and law grants parent access.
  • Client requests release.
  • Defense against charges filed by client.
  • Court-ordered release where privileged communication doesn't exist.
  • Sharing with clerical help/colleagues to benefit client (internal).
• Key Terms:
  • Informed Consent: Permission after the nature/purpose of assessment is explained.
  • Test Worthiness: Reliability, validity, cross-cultural fairness, and practicality.
  • Test Security: Responsibility to ensure integrity of test content.
• Moral Principles of Decision Making (Kitchener, 1984):
  1. Autonomy: Protecting self-determination.
  2. Nonmaleficence: "Do no harm."
  3. Beneficence: Promoting societal good/client well-being.
  4. Justice: Equal/fair treatment.
  5. Fidelity: Maintaining trust in relationship.
  6. Veracity: Being truthful/genuine.
• Corey’s 8-Step Problem-Solving Model:
  1. Identify problem. 2. Identify potential issues. 3. Review guidelines. 4. Know laws. 5. Consult. 6. Consider actions. 7. Enumerate consequences. 8. Decide.

6. LEGAL ISSUES IN ASSESSMENT

• FERPA (Family Educational Rights and Privacy Act, 1974): Right of privacy and review for student/test records in federally funded schools.
• HIPAA (Health Insurance Portability and Accountability Act, 1996): Restricts information sharing without consent; ensures privacy/security of medical/counseling records.
• Privileged Communication: Legal right (belonging to the client) to keep conversations confidential in a court of law. Supported by Jaffee v. Redmond (1996).
• Civil Rights Acts (1964 and amendments): Tests for employment/promotion must be shown valid for the job; no differential cutoffs allowed.
• ADA (Americans with Disabilities Act, 1990): Bans discrimination; requires accommodations for test-takers with disabilities.
• IDEA (Individuals with Disabilities Education Act): Assures right to be tested for disabilities at school expense; creation of Individualized Education Plans (IEP).
• Section 504 (Rehabilitation Act): Assessment must measure ability, not disability, for federally funded programs.
• Carl Perkins Act: Assures access to vocational assessment for "special populations" (disabilities, single parents, etc.).

7. DIAGNOSIS AND THE DSM-5

• History:
  • DSM-I (1952): 106 diagnoses, 3 categories.
  • DSM-II (1968): 185 diagnoses, 11 categories.
  • DSM-III (1980): 265 diagnoses, introduced multiaxial system.
  • DSM-IV-TR (2000): 365 diagnoses, five axes.
  • DSM-5 (2013): Moved to a single-axis approach (merging Axes I, II, and III). Aligned with ICD-9 and ICD-10.
• Diagnostic Indicators in DSM-5:
  • Principal Diagnosis: The reason for treatment, listed first.
  • Subtypes: "Specify whether"—mutually exclusive (pick one).
  • Specifiers: "Specify if"—not mutually exclusive (pick all that apply).
  • Severity: "Specify current severity" (e.g., mild, moderate, severe).
• Provisional Status: Used when there is strong inclination but insufficient information.
  • Rule-out: Significant symptoms but doesn't yet meet full criteria.
  • Traits: Presents features but falls short of full diagnosis.
• V-Codes/Z-Codes: Used for non-disorder conditions reflecting psychosocial/environmental issues (e.g., Z59.0 Homelessness).
• Cultural Formulation Interview (CFI): Helps understand values and experiences shaping the client’s worldview.

8. THE ASSESSMENT REPORT PROCESS

• Purposes: Response to referral, case conceptualization, treatment planning, educational service suggestions, court evidence.
• Gathering Information:
  • Breadth: Casting a wide net to cover all relevant issues.
  • Depth: Intensity and seriousness of the issues.
• Interview Methods:
  • Structured: Preestablished items; high reliability; may feel dehumanizing.
  • Unstructured: No list; better rapport; may lack breadth.
  • Semi-structured: Flows between prescribed items and client-directed "drifting."
• Mental Status Exam (MSE) Components:
  1. Appearance and Behavior: Grooming, hygiene, eye contact, gait.
  2. Emotional State: Affect (current feeling state; e.g., labile, flat) and Mood (underlying emotional well-being).
  3. Thought Components: Content (Hallucinations, Delusions, Suicidality) and Process (Flight of ideas, tangential, loose associations).
  4. Cognition: Orientation to person, place, time; Memory; Insight; Judgment.

9. TEST WORTHINESS: VALIDITY AND RELIABILITY

• Correlation Coefficient ($r$): Relationship between two sets of scores (range $-1.00$ to $+1.00$).
• Coefficient of Determination ($r^2$): Shared variance between variables ($0.85^2 = 0.72$ or 72%).
• Validity (Measuring what it's supposed to):
  • Content Validity: Degree to which items represent the domain.
  • Criterion-Related Validity: Relationship between test and standard (Concurrent vs. Predictive).
  • Construct Validity: Most complex; includes Experimental Design, Factor Analysis, Convergent Validity (correlation with similar tests), and Discriminant Validity (lack of correlation with different tests).
• Reliability (Consistency of scores):
  • Test-Retest: Same test, two administrations.
  • Alternate Forms: Two equivalent versions.
  • Internal Consistency: Split-half (odd-even), Cronbach’s Alpha (varied responses), Kuder-Richardson (right/wrong answers).
• Item Response Theory (IRT): Examines each item’s ability to discriminate based on the construct being measured; utilizes the Item Characteristic Curve.

10. STATISTICAL CONCEPTS AND MEASUREMENT

• Measures of Central Tendency:
  • Mean ($M$): $\frac{\sum X}{N}$
  • Median: Middle score (50% above/below). Preferable in skewed distributions.
  • Mode: Most frequent score.
• Measures of Variability:
  • Range: $Highest score - Lowest score + 1$
  • Interquartile Range: Middle 50% around the median.
  • Standard Deviation ($SD$): How scores deviate around the mean. $\sqrt{\frac{\sum(X-M)^2}{N}}$
• Normal Curve Distribution:
  • 68% of scores fall within $\pm 1 SD$.
  • 95% of scores fall within $\pm 2 SD$.
  • 99.5% of scores fall within $\pm 3 SD$.
• z-Scores: The most fundamental standard score ($M=0, SD=1$). Formula: $z = \frac{X - M}{SD}$.
• Standard Errors:
  • Standard Error of Measurement ($SEM$): Estimating where a true score lies. $SEM = SD \sqrt{1 - r}$.
  • Standard Error of Estimate ($SE_{est}$): Confidence interval around a predicted score. $SE_{est} = SD_Y \sqrt{1 - r^2}$.
• Scales of Measurement:
  • Nominal: Arbitrary categories (e.g., 1=Asian, 2=Latino).
  • Ordinal: Rank order; unequal distances between measurements.
  • Interval: Equal distances; no absolute zero (e.g., SAT scores).
  • Ratio: Equal intervals and a meaningful zero (e.g., reaction time, height).

11. ASSESSMENT OF EDUCATIONAL ABILITY

• Survey Battery Tests:
  • NAEP: "The National Report Card" evaluating state/national standards.
  • Stanford 10: K–12; offers Individual/Class reports; compares achievement to potential.
  • ITBS: Measures basic skills for progress.
• Diagnostic Tests:
  • WRAT4: Screening for reading, spelling, math, sentence comprehension (Ages 5–94).
  • WIAT-III: Identifies strengths/weaknesses for special education eligibility.
  • Woodcock-Johnson III: Comprehensive; Ages 2–90.
• Readiness Tests:
  • Kindergarten Readiness Test (KRT): Assesses readiness for preschool/kindergarten.
  • Gesell Developmental Observation: Unique assessment of "the whole child" (social-emotional, physical).
• Cognitive Ability Tests (Aptitude):
  • OLSAT 8: Verbal and nonverbal clusters.
  • CogAT: Based on Vernon and Cattell models of intelligence.
  • College Exams: SAT ($M \approx 500, SD \approx 100$), ACT ($M \approx 21, SD \approx 5$), GRE ($M \approx 151, SD \approx 8.6$), MAT ($M \approx 400$).

12. INTELLIGENCE AND NEUROPSYCHOLOGY

• Theories of Intelligence:
  • Spearman: Two-factor ($g$ and $s$).
  • Vernon: Hierarchical Structure.
  • Guilford: 180 factors (Cube model).
  • Cattell: Fluid (innate) vs. Crystallized (acquired) intelligence.
  • Gardner: Multiple Intelligences (Verbal, Logical, Musical, Spatial, Kinesthetic, Interpersonal, Intrapersonal, Naturalist, Existential).
  • Sternberg: Triarchic Theory (Componential, Experiential, Contextual).
• Individual Intelligence Tests:
  • Stanford-Binet (SB5): Measures five factors; uses basal/ceiling levels.
  • Wechsler Scales: WISC-IV (children 6–16), WAIS-IV (adults 16–90), WPPSI-III (young children).
• Nonverbal Tests: Comprehensive Test of Nonverbal Intelligence (CTONI-2), UNIT, Wechsler Nonverbal (WNV).
• Neuropsychological Assessment Approaches:
  • Fixed Battery: Halstead-Reitan (8 core tests including Category, Tactual Performance, Trail Making, Finger Tapping).
  • Flexible Battery: Boston Process Approach (BPA); dictates tests based on unique needs/observation.

13. CAREER AND CLINICAL INSTRUMENTS

• Interest Inventories:
  • Strong Interest Inventory: Uses Holland’s Hexagon (RIASEC): Realistic, Investigative, Artistic, Social, Enterprising, Conventional.
  • Self-Directed Search (SDS): Self-scored version of Holland’s work.
  • O*NET: U.S. government online database of occupational classifications.
• Objective Personality Tests:
  • MMPI-2: 567 items; identifies psychopathology (Hs, D, Hy, Pd, Mf, Pa, Pt, Sc, Ma, Si scales).
  • MCMI-III: Focuses on personality disorders; uses Base Rate scores.
  • NEO PI-3: The Big Five: Openness, Conscientiousness, Extraversion, Agreeableness, Neuroticism (OCEAN).
  • SASSI: Screens for substance dependence using "subtle" items to bypass defensiveness.
• Projective Tests:
  • TAT: Murray’s cards; storytelling assesses "needs and press."
  • Rorschach: Blots scored by Exner (Location, Determinants, Content).
  • Drawing Tests: House-Tree-Person (HTP), Kinetic Drawing (KFD).

14. INFORMAL ASSESSMENT TECHNIQUES

• Observation: Event sampling (behavior frequency) vs. Time sampling (set time blocks).
• Rating Scales: Subjective quantification.
  • Halo effect: Overall impression clouds specific rating.
  • Generosity error: Identifier identifies with client.
• Classification Methods: Behavior and Feeling Word Checklists.
• Environmental Assessment: Direct observation of home/work; Sociometric assessment (mapping group dynamics).
• Records: Biographical inventories, Cumulative records, Genograms (mapping three generations of family history).
• Performance-Based: Use of Portfolios as an alternative to standardized testing.