Dimensional Personality Disorder Scales (IPIP-PDS)
IPIP Personality Disorder Scales — Dimensional Single-Disorder Scales for All 10 DSM-5-TR Personality Disorder Categories
Ten IPIP-validated dimensional scales — one per DSM-5-TR personality disorder. Each scale produces a facet-level severity profile rather than a categorical present/absent verdict, so the information captured is proportional to what the disorder actually is: a dimensional variant of normal personality.
All 10 Personality Disorder Scales
Paranoid Personality Disorder
Distrust and suspiciousness; others’ motives interpreted as malevolent.
Schizoid Personality Disorder
Social detachment and restricted affective expression. Pairs with the Revised Social Anhedonia Scale for anhedonia confirmation.
Schizotypal Personality Disorder
Odd beliefs, magical thinking, perceptual aberrations, and eccentric behavior.
Antisocial Personality Disorder
Disregard for and violation of others’ rights. Callousness and deceitfulness.
Borderline Personality Disorder
Instability of identity, relationships, and affect. Impulsivity and fear of abandonment.
Histrionic Personality Disorder
Excessive emotionality and attention-seeking. Shallow and rapidly shifting emotions.
Narcissistic Personality Disorder
Grandiosity, need for admiration, and lack of empathy. Sense of entitlement.
Avoidant Personality Disorder
Social inhibition, inadequacy feelings, and hypersensitivity to negative evaluation.
Dependent Personality Disorder
Excessive need to be taken care of; submissive and clinging behavior; fear of separation.
Obsessive-Compulsive Personality Disorder
Preoccupation with orderliness, perfectionism, and mental and interpersonal control.
Dimensional vs. Categorical Scoring
The IPIP-PDS generates continuous severity scores for each personality disorder category rather than binary present/absent classifications. This dimensional approach is consistent with the empirical literature showing that personality disorder features are continuously distributed in the population, with clinical presentations representing extreme variants of normal personality dimensions rather than categorically distinct taxa.
The dual-track scoring option supports integration with the HiTOP hierarchical taxonomy, mapping personality disorder severity scores onto broad spectra (detachment, antagonism, disinhibition, psychoticism, negative affect).
Recommended Workflow
The IPIP-PDS provides dimensional severity profiles across all ten personality disorder categories, including presentations below interview threshold. Used alongside a structured diagnostic interview, it supplies the dimensional severity information needed for treatment planning to complement categorical diagnostic decisions.