Psychometric validation protocol — preprint
Concurrent Validity, Test-Retest Reliability, and Preliminary Minimal Clinically Important Difference of PinnacleAI AbilityScore: A Cross-Sectional Psychometric Validation Study Protocol
Saripalli, Koti Reddy · Ramtenki, Raghupathi · Boini, Srikanth Yadav
Planned comparator validation, n=300 plus 60 retest. This record does not report completed validation results.
The original abstract contains conflicting statements about OSF registration. Completed registration is not established by the reviewed source.
Author-written abstract
Section linkBackground: AbilityScore is a standardized composite developmental index (0–1000) that quantifies child developmental performance relative to age-normed expectations. Operational data from more than 18.6 million therapy sessions show inter-rater reliability r = 0.91 and ICC = 0.88. However, formal concurrent validity against established reference instruments, controlled test-retest reliability, and minimal clinically important difference (MCID) have not been published.
Objective: To determine the concurrent validity of AbilityScore against Vineland-3, CARS-2, Bayley-4, and ABAS-3; to assess the reliability of the 7-day test-retest; and to estimate a preliminary MCID.
Methods: Cross-sectional multi-center psychometric validation study with a nested prospective test-retest substudy. Component A: n = 300 children aged 7 months to 7 years assessed with AbilityScore and comparator instruments in the same session by blinded raters in 6 Pinnacle Blooms Network centers. Component B: n = 60 subset, reassessed at 7 days. Primary analysis: Pearson correlation (Bonferroni-adjusted α = 0.017). Pre-registered SAP on OSF.
Discussion: This study addresses the single most important evidence gap for AbilityScore. It will determine whether the instrument meets the accepted thresholds for concurrent validity (r ≥ 0.50) and reliability (ICC ≥ 0.80), allowing the progression from operational evidence to formal psychometric validation.
Trial registration: CTRI (to be registered prior to first enrollment). OSF pre-registration of SAP (to be completed prior to data collection).
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