MMPI-2 Flashcards
What does the MMPI-2 measure?
The Minnesota Multiphasic Personality Inventory (MMPI) is the most widely used and researched standardized psychometric test of adult personality and psychopathology.[1] Psychologists and other mental health professionals use various versions of the MMPI to develop treatment plans; assist with differential diagnosis; help answer legal questions (forensic psychology); screen job candidates during the personnel selection process; or as part of a therapeutic assessment procedure.
So it’s not explicitly stated in the slides, but I’m assuming it’s facilitating psychiatric diagnosis among a more representative sample. As opposed to the MMPI, the MMPI-2 includes minority groups.
What is empirical keying and how was it used in the MMPI?
Empirical Keying: Empirical determination of items that differentiated between groups
Very innovative approach at the time
Test items selected or developed according to face validity
Focus on validity: Each item had to discriminate between groups successfully
What was the original standardization sample for the MMPI?
724 visitors to University of Minnesota hospital and outpatient clinics: became known as the
“Minnesota Normals”
Confirmed they were not under the care of a physician; ages 16-65
Demographics based upon 1930 census data for Minnesota: Typical examinee was 35 years old, married, lived in small town or rural area, had 8 years of general schooling, worked at skilled or semi-skilled trade (or was married to man at this level)
How reliable is the MMPI-2?
Test re test: Clinical scales .93 (Si) to .56 (Pa)
Describe the MMPI-2’s validity.
Convergent, discriminant and incremental in comparison to other measures of emotional functioning
Describe threats to validity.
Threats to Protocol Validity Non-Content-Based Invalid Responding Non-Responding Random Responding Intentional Unintentional Reading Difficulties Lack of comprehension Confusion Fixed Responding Acquiescence (yea saying) Counter-Acquiescence (nay saying) Content-Based Invalid Responding Over-Reporting “Faking bad” or “Malingering” Intentional Exaggeration vs. Fabrication Unintentional Negative Emotionality/Distress/Help Seeking Under-Reporting “Faking good” or defensiveness Intentional Minimization vs. Denial Unintentional Ego Defenses Social Desirability
What are the advantages of MMPI-2?
Provide information regarding the accuracy of self-report
Specify the type of distortion or impression management
Indicate the extent of distortion
Provide a dimensional perspective
Allow confidence in the clinical inferences made from the MMPI-2
Describe disadvantages of MMPI-2.
Only Caucasians in original MMPI development
MMPI-2 matched 1980 census for inclusion of ethnic minorities, but test could still be biased
Early studies found significant differences between Caucasian and ethnic minority groups
Later studies found small differences when groups were matched for age, education, and other demographics
Need to consider level of acculturation
Graham (2011, 5th edition of text) advises:
T scores 50 - 60 likely reflect issues of acculturation
T scores > 65 likely reflect symptoms and problems consistent with Caucasian group
Here are a few: the hispanic and Asian American population is underrepresented in the sample, sample exceeded estimates for educational level and occupational status (majority of the sample had 2 years of college - which is not the norm in the U.S.).
What is the age range for the MMPI-2?
ages 18 and older
What reading level is necessary to administer the MMPI-2?
6th grade reading level
What is a clinically significant score on the MMPI-2?
Clinical Elevation = 65+
What are the mean T-score and standard deviation and how are they related to MMPI-2 test interpretation?
T scores: Mean = 50 Standard Deviation = 10 Clinical Elevation = 65+ Low Score = < 40 (only interpreted for certain scales, e.g. K, 7, O)
CNS
Cannot Say (?) Non-responding A 567-Item “Scale” >10 omissions concern for validity; check scale Possible Reasons for Elevation: Lack of cooperation & defensiveness Lack of insight Obsessiveness Reading difficulties or confusion Effects on Profile: Deflated scores Depending on the scale location of the omitted items
VRIN
Variable Response Inconsistency Random Responding Designed to detect Random Responding 47 item pairs, 12 can be scored two ways T scores range from 30 to 120 Applications Detection of random responding VRIN ≥ 80 Detection of “hypervigilance” VRIN < 40 Aid in the interpretation of infrequency scales Use VRIN to evaluate random responding
TRIN
True Response Inconsistency Fixed Responding Designed to detect Fixed Responding (Acquiescence or Counter-Acquiescence) 20 item pairs, 3 symmetrical (both ways) Raw score converted to T score which will always be equal to or greater than 50 T score greater than 50 will be followed by a “T” or an “F” Fixed response set indicated if TRIN ≥ 80T OR TRIN ≥ 80F Applications Detection of response sets Interpretation of L, K, and S Use TRIN to evaluate fixed responding
F
Infrequency
Infrequency scales (confounded with distress)
Over-Reporting
Used to identify over-reporting
60 “infrequently endorsed” items among first 370 items in the booklet
Possible reasons for elevation:
Intentional over-reporting
Unintentional over-reporting
Random responding
Fixed responding
Severe psychopathology or severe distress
Use FP to evaluate intentional over-reporting
Fb
Back (Side) Infrequency
Infrequency scales (confounded with distress)
Over-Reporting
Designed to detect changes in responding between first (#s 1-370) and second half of the test
40 infrequently endorsed items appearing in second half of booklet
Possible reasons for elevation:
Intentional Over-reporting
Unintentional Over-reporting
Random Responding
Fixed Responding
Severe Psychopathology or Severe Distress
Fatigue
If T score FB > T score F+30, significant change in responding occurred
Fp
Infrequency Psychopathology
Psychiatric infrequency scale (malingering?)
Over-Reporting
Designed to detect intentional and unintentional over-reporting in individuals with psychopathology
27 items endorsed infrequently by a variety of clinical samples including psychiatric inpatients
Possible reasons for elevation:
Intentional over-reporting
Random responding
Fixed responding
FP > 70 and < 100 reflects degree of exaggeration of symptoms
If FP ≥ 100 AND VRIN < 70 AND TRIN < 70, intentional over-reporting is indicated
If F is elevated AND FP < 70, the elevated score on F likely reflects severe pathology, distress, or unintentional over-reporting
L
Lie Claiming excessive virtue Under-Reporting Designed to detect intentional under-reporting 15 obvious items All keyed “false” Possible reasons for elevation: Intentional under-reporting Lack of insight Very traditional values and beliefs Indiscriminant “false” responding
K
Correction
Defensiveness, reservations
Under-Reporting
Designed to detect unintentional under-reporting
30 “subtle” items
Defensive person less likely to recognize purpose of items and to avoid detection
All but one keyed “false”
Possible reasons for elevation:
Defensiveness, denying symptoms, problems, and negative characteristics more than the average person
Psychological well-being, ego strength, psychological resources
Effects of education
Minimal with MMPI-2
Recent research has not supported routine use of K-corrected clinical scale scores
Caution in settings where defensiveness is common (e.g., employment screening, child custody evaluations)
K-corrected scores may overpathologize test takers
Nonclinical applications:
Generate both K-corrected and non-K-corrected scores
Use non-K-corrected scale scores when the K-scale scores are significantly above or below average
S
Superlative Self-Presentation
Under-Reporting
Developed by Butcher and Han (1995) to identify under-reporting
Tendency to present as highly virtuous, responsible and free of psychological problems
Common in personnel screening, child custody
Contains subscales to assist in identifying specific areas of defensiveness:
Belief in human goodness
Serenity
Contentment with life
Patience and denial of irritability and anger
Denial of moral flaws
Patience and denial of irritability and anger
Denial of moral flaws
Non-defensive with significant psychopathology
If F is elevated AND FP < 70, the elevated score on F likely reflects severe pathology, distress, or unintentional over-reporting
Random Responding
Random responding: F, FB and FP usually greater than 100, K & S near 50 and L 60-70.
Faking Bad Profile
Faking Bad: F and FB have T scores greater than 100 while L and K are low.