Severity Indices of Personality Problems-Short Form in Old-Age Psychiatry: Reliability and Validity.

The Severity Indices of Personality Problems (SIPP; Verheul et al., 2008) is a popular self-report questionnaire that measures severity of maladaptive personality functioning. Two studies demonstrated the utility of the short form (SIPP-SF) among older adults but validation in clinical settings is lacking. Therefore, we examined the psychometric properties of the SIPP-SF in a large sample of older adult Dutch outpatients (N = 124; age range = 60-85 years, M = 69.8, SD = 5.3). The SIPP-SF domains showed good to excellent internal reliability (Cronbach's α = .75-.91) and effectively discriminated between participants with and without a personality disorder, as assessed with the Structured Clinical Interview for DSM-IV Axis II Personality Disorders (SCID-II). Convergent validity of the SIPP-SF was examined with instruments for measuring personality pathology among older adults (Informant Personality questionnaire [HAP]; Gerontological Personality Disorders Scale [GPS]). The GPS generally correlated with the SIPP-SF domains in expected directions, with small to large effect sizes. For the HAP, only 1 scale correlated with all SIPP-SF domains. No associations were found between the SIPP-SF and psychiatric symptomatology as measured by the Brief Symptom Inventory (BSI). The SIPP-SF appears to be a promising instrument for assessing maladaptive personality functioning among older adult outpatients.

[Standardized assessment of personality disorders in older adults: State-of-the-art.] / Gestandaardiseerd meten van persoonlijkheids­stoornissen bij ouderen.

The double ageing evolution in Europe is a tremendous challenge for health care. Older adults with a personality disorder place an additional burden: they have more somatic and psychiatric co-morbidity than those without a personality disorder. Moreover, they experience less quality of life than individuals without personality disorders. This is in sharp contrast to the dearth of empirical research concerning the construct of personality disorders in later life, the very limited amount of available diagnostic tools, criteria of classification systems like DSM not being attuned to the elderly context and the lack of age-neutrality of popular instruments to measure personality disorders. Therefore, in the Netherlands and Belgium a start was made to develop and validate age-specific instruments and to examine the applicability of the alternative dimensional-hybrid DSM-5 classification of personality disorders in older adults. These recent developments and how to apply them for a personalized assessment in older adults will be discussed. Finally, we advise a phased test-based diagnostic approach in which the above-mentioned instruments, combined with measures of adaptive features or more specific tests, can contribute to an assessment optimizing the balance between restricting the load for the older patient and still being sufficiently comprehensive to result in a personalized approach of the diagnostic process.

[Concordance and added value of informant- versus self-report in personality assessment: a systematic review]. / Concordantie en meerwaarde van informant- versus zelfrapportage bij persoonlijkheids­diagnostiek: een systematische review.

INTRODUCTION: Both in personality assessment and scientific research, self-report questionnaires are frequently used, yet the use of informant-report is increasing. The aim of this systematic review is to address the concordance and added value of informant- versus self-report in measuring personality pathology in (older) adults. METHOD: A systematic search has been carried out for relevant literature published between 2000 and 2018, via the databases Scopus, PsychINFO and PubMED. Also the reference lists of included articles have been checked, resulting in an inclusion of 46 studies. RESULTS: The concordance between informant- and self-report appears to be only moderate, but highest when the relationship is characterized by interpersonal intimacy (such as between partners). The concordance between informants is somewhat better than between informant- and self -reports. Informants have an added value over self-report in the context of externalizing personality traits and interpersonal functioning. In addition, they appear to be a better predictor for health, adaptability and professional functioning. Self-report on the other hand captures intrapsychic characteristics more thoroughly. CONCLUSION: In personality assessment, informant- and self-reports could be complementary. However, empirical research among older adults is almost uncharted territory and deserves more attention.

Measuring personality functioning in older adults: construct validity of the Severity Indices of Personality Functioning - Short Form (SIPP-SF).

OBJECTIVE: The dimensional personality disorders model in the Diagnostic and Statistical Manual (DSM)-5 section III conceptually differentiates impaired personality functioning (criterion A) from the presence of pathological traits (criterion B). This study is the first to specifically address the measurement of criterion A in older adults. Moreover, the convergent/divergent validity of criterion A and criterion B will be compared in younger and older age groups. METHOD: The Severity Indices of Personality Functioning - Short Form (SIPP-SF) was administered in older (N = 171) and younger adults (N = 210). The factorial structure was analyzed with exploratory structural equation modeling. Differences in convergent/divergent validity between personality functioning (SIPP-SF) and pathological traits (Personality Inventory for DSM-5; Dimensional Assessment of Personality Pathology-Basic Questionnaire) were examined across age groups. RESULTS: Identity Integration, Relational Capacities, Responsibility, Self-Control, and Social Concordance were corroborated as higher order domains. Although the SIPP-SF domains measured unique variation, some high correlations with pathological traits referred to overlapping constructs. Moreover, in older adults, personality functioning was more strongly related to Psychoticism, Disinhibition, Antagonism and Dissocial Behavior compared to younger adults. DISCUSSION: The SIPP-SF construct validity was demonstrated in terms of a structure of five higher order domains of personality functioning. The instrument is promising as a possible measure of impaired personality functioning in older adults. As such, it is a useful clinical tool to follow up effects of therapy on levels of personality functioning. Moreover, traits were associated with different degrees of personality functioning across age groups.

Age Neutrality of Categorically and Dimensionally Measured DSM-5 Section II Personality Disorder Symptoms.

Studies on the face validity of DSM-5 Section II categorical personality disorder (PD) symptoms indicate a bias against older adults. To extend these results, this article explores whether categorically and dimensionally scored PD symptoms of DSM-5 Section II, as measured in the Assessment of DSM-IV Personality Disorders (ADP-IV; Schotte & de Doncker, 1994), corroborate potential age bias across younger (aged 18-34), middle-aged (35-59 years), and older adults (aged 60-75). Differential item functioning (DIF) analyses, following a classical test theory approach, showed that 2 of the 79 symptoms were measured differently across 3 age groups when categorically assessed, and 4 when dimensionally measured. Nevertheless, subsequent differential test functioning analyses supported a low aggregated impact of DIF on the dimensional scales, justifying mean-level comparisons across age groups. Generalizability of the results is discussed in light of methodological issues concerning the research of age neutrality of PD symptoms, including the employed measurement instrument, PD symptom measurement approach, and sample and age range used to describe older adults.

Age neutrality of the young schema questionnaire in patients with a substance use disorder.

BACKGROUND: Young's Schema Focused Therapy (SFT) is gaining popularity in the treatment of older adults. In the context of this therapy, the Young Schema Questionnaire (YSQ) was developed to assess the early maladaptive schemas (EMS). EMS are considered to be relatively stable over time, but research shows that questionnaires often lack face validity in older adults, which makes it difficult to investigate EMS in older adults and their stability across the lifespan. METHODS: In the present cross-sectional study, we investigated the age neutrality of the Young Schema Questionnaire--Long Form in young (aged 18-34 years), middle-aged (aged 35-59 years), and older (aged 60-75 years) adults in a clinical sample of substance use disorders (N = 321) by examining potential differential item functioning (DIF). While investigating the stability of the schemas, we controlled for substance dependency and clinical symptoms by means of, respectively, the Drug Use Screening Inventory - Revised and the Symptom Checklist-90-R. RESULTS: The Bonferroni-adjusted Liu-Agresti Cumulative Common Log-Odds Ratio confirmed large DIF for six items, divided across five schema scales (Mistrust/Abuse, Subjugation, Entitlement, Enmeshment and Self-sacrifice). Of the six items that presented DIF, only one item showed differential test functioning (Entitlement). Overall results show only 3% DIF, implying age neutrality of the questionnaire. CONCLUSIONS: Current results corroborate that most EMS scales are equally measured across age, and reliable comparisons can be made across the lifespan, allowing for good clinical practice and further research on SFT in older adults. Only for Entitlement, Enmeshment, and Insufficient Self-control, caution is needed when comparing mean scores across the age groups.

Personality disorders in older adults: Differences in self-informant ratings.

Previous research on self-informant reports in assessing personality disorders (PDs) has been mainly focused on adults, leaving older adults under-studied. We examined self-informant agreement in PD screening among older adults (≥60 years) using the Gerontological Personality disorders Scale (GPS). Potential differences such as who reports more personality pathology on a PD screener (i.e., GPS), item accessibility and the effect of relational aspects were studied as well. Data of 326 older adult-informant dyads, of which the older adults were sampled from five general practices in the Netherlands, were used. Results indicate that self-informant agreement ranged from r = 0.26-0.73, with lower concordance on the GPS-subscale measuring intrapersonal aspects of personality pathology. Informants were more sensitive to habitual pathological personality features than older adults. Two GPS items showed differential item functioning across self- and informant-report. Of relational aspects, only congeniality affected the GPS-iv scores; lower ratings on congeniality were associated with higher GPS-iv scores (i.e., higher reporting of personality problems).

Age-Neutrality of a Brief Assessment of the Section III Alternative Model for Personality Disorders in Older Adults.

The alternative model for personality disorders in the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders ( DSM-5) is considered an important step toward a possibly better conceptualization of personality pathology in older adulthood, by the introduction of levels of personality functioning (Criterion A) and trait dimensions (Criterion B). Our main aim was to examine age-neutrality of the Short Form of the Severity Indices of Personality Problems (SIPP-SF; Criterion A) and Personality Inventory for DSM-5-Brief Form (PID-5-BF; Criterion B). Differential item functioning (DIF) analyses and more specifically the impact on scale level through differential test functioning (DTF) analyses made clear that the SIPP-SF was more age-neutral (6% DIF, only one of four domains showed DTF) than the PID-5-BF (25% DIF, all four tested domains had DTF) in a community sample of older and younger adults. Age differences in convergent validity also point in the direction of differences in underlying constructs. Concurrent and criterion validity in geriatric psychiatry inpatients suggest that both the SIPP-SF scales measuring levels of personality functioning (especially self-functioning) and the PID-5-BF might be useful screening measures in older adults despite age-neutrality not being confirmed.

Construct Validity of the DSM-5 Section III Maladaptive Trait Domains in Older Adults.

The DSM-5 Section III model of personality disorders remains largely unexplored in older adults. More specifically, there is a need for further research on the generalizability of the five trait domains in old age. The development of a short operationalization to screen for maladaptive trait domains, the Personality Inventory for DSM-5 Brief Form (PID-5-BF), can stimulate the use of the alternative DSM-5 model in older adults by addressing the need for short instruments. The primary goal of this study was to examine the construct validity of the PID-5-BF by comparing its structural model and nomological network with the original PID-5 in terms of relations with domains of personality functioning and a gero-specific personality disorder indicator. A five-factor model was supported, but the domain Disinhibition was not replicated in the original PID-5, and some PID-5-BF items showed weak loadings. Nevertheless, the nomological network was similar and showed meaningful relations, supporting the use of the Brief PID-5 in older clinical samples.

Developmentally sensitive markers of personality functioning in adolescents: Age-specific and age-neutral expressions.

Criterion D of the Diagnostic and Statistical Manual of Mental Disorders (5th ed.; DSM-5; American Psychiatric Association [APA], 2013) refers to a possible onset of personality disorders (PDs) in adolescence and in Section II the development/course in adolescence is described by some typical characteristics for several PDs. Yet, age-specific expressions of PDs are lacking in Section III. We urgently need a developmentally sensitive assessment instrument that differentiates developmental and contextual changes on the one hand from expressions of personality pathology on the other hand. Therefore we investigated which items of the Severity Indices for Personality Problems-118 (SIPP-118) were developmentally sensitive throughout adolescence and adulthood and which could be considered more age-specific markers requiring other content or thresholds over age groups. Applying item response theory (IRT) we detected differential item functioning (DIF) in 36% of the items in matched samples of 639 adolescents versus 639 adults. The DIF across age groups mainly reflected a different degree of symptom expressions for the same underlying level of functioning. The threshold for exhibiting symptoms given a certain degree of personality dysfunction was lower in adolescence for areas of personality functioning related to the Self and Interpersonal domains. Some items also measured a latent construct of personality functioning differently across adolescents and adults. This suggests that several facets of the SIPP-118 do not solely measure aspects of personality pathology in adolescents, but likely include more developmental issues. (PsycINFO Database Record