Open, Reproducible Psychometric Measurement & Quantitative Synthesis in K–12 Education
The Center for Educational & Psychological Assessment (CEPA) operates as the dedicated scientific research institute of 5 Steps Academy Private Limited in Singapore. CEPA engineers parallel parent and youth K–12 clinical and screening batteries under COSMIN and International Test Commission (ITC) standards, evaluates cross-national measurement invariance across Anglophone school systems, and conducts variance-partitioned PRISMA 2020 meta-analyses.
Director & Principal Investigator
Alexander Kuznetsov, Ph.D.
Director of Research · Center for Educational & Psychological Assessment
Dr. Alexander Kuznetsov leads psychometric scale engineering, cross-cultural measurement invariance modeling, and quantitative evidence synthesis at CEPA in Singapore. His methodological work centers on ordinal WLSMV multi-group confirmatory factor analysis, proportional-odds Differential Item Functioning (DIF), multi-process IRTree response-style decomposition, dyadic measurement reactivity, and within-family / cluster-adjusted random-effects meta-analysis in K–12 education and developmental psychology.
OpenInventories Portal
CEPA operates OpenInventories.org as a free, non-commercial psychometric platform supporting researchers, school psychologists, doctoral candidates, and cross-cultural validation teams:
- Equated K–12 Batteries: Full 60-item clinical (Core-60) and nested 40-item screening (Short-40) parent and youth forms across HABRI, HPSSI, HEFSI, and HSRLI, plus the 5-item DARRI-5 index.
- National Adaptation Registry (11 Languages): Automated copyright-holder authorization certificates for university IRB submissions under ITC Guideline PC-1.
- Reference Invariance Matrices: Summary multi-group CFA and DIF benchmarks calibrated against the N = 3,809 pooled reference cohort.
Validated K–12 Multi-Informant Psychometric Batteries
All four flagship inventories provide psychometrically equated Parent (Grades K–12) and Youth (Grades 4–12) 60-item clinical batteries (Core-60; 8 subscales) and nested 40-item screeners (Short-40), evaluated across United States, British, Canadian, and Australian cohorts.
| Battery & Domain | Expert CVI | Wave 1 Cohort | WLSMV CFA | Reliability ωt | 2-Wk ICC(2,1) | MDC95 (P/S) | Cross-Nat. DIF |
|---|---|---|---|---|---|---|---|
|
HABRI Academic Burnout, Perfectionism & Recovery |
N = 16 .865 (.875 S40) |
N = 577 families 392 dyads + 185 K–3 |
CFI .956–.962 RMSEA .046–.049 |
.953–.968 r = .852 |
N = 178 dyads .857 (P) / .840 (S) |
0.76 / 0.90 | 120/120 neg. φ = .988–1.000 |
|
HPSSI Parenting, Digital Mediation & School Support |
N = 28 .846 (ICI .969) |
N = 659 families 440 dyads + 219 K–3 |
CFI .953–.968 RMSEA .048–.051 |
.954–.966 r = .773 |
N = 203 dyads .814 (P) / .792 (S) |
0.56 / 0.70 | 120/120 neg. φ = .981–.999 |
|
HEFSI Executive Functioning & Self-Management |
N = 17 .880 (ICI .975) |
N = 551 families 385 dyads + 166 K–3 |
CFI .954–.959 RMSEA .047–.049 |
.956–.968 r = .835 |
N = 190 dyads .867 (P) / .853 (S) |
0.68 / 0.71 | 120/120 neg. 0/120 q < .05 |
|
HSRLI Self-Regulated & Generative-AI Era Learning |
N = 17 .875 (ICI .984) |
N = 540 families 365 dyads + 175 K–3 |
CFI .955–.961 RMSEA .047–.049 |
.962–.969 r = .808 |
N = 180 dyads .782 (P) / .789 (S) |
0.89 / 0.90 | 120/120 ZM φ = .963–.999 |
Research Monographs & Methodological Specifications
Inspect sample architectures, psychometric fit indices, longitudinal variance-partitioning models, and effect-size estimates across all 10 empirical psychometric/IDA studies and all 6 PRISMA 2020 systematic reviews and meta-analyses.
Published Zenodo Replication Archives (10 Datasets)
Every empirical study at CEPA is backed by a permanent DataCite/Zenodo archive containing complete de-identified item-level CSV datasets and standalone executable R (lavaan) and Python replication scripts.
Ethical Oversight, Data Protection & Open Licensing
Institutional protocols at CEPA enforce dual-informant ethical safeguards, transparent intellectual-property governance, and full computational reproducibility.
Human-Subjects IRB & Consent
Multi-informant K–12 survey and two-week retest protocols were reviewed and approved under Institutional Review Board authorization #CEPA-2026-H4 at the Center for Educational & Psychological Assessment (5 Steps Academy Private Limited, Singapore), adhering to the Declaration of Helsinki and APA Ethical Principles. Informed caregiver consent (Grades K–12) and independent youth assent (Grades 4–12) were obtained prior to participation, with zero PII in public archives.
Two-Tier Open Science Licensing
Instrument item stems (registered under U.S. Copyright Office Case #1-15290600571) and validation manuscripts carry CC BY-NC-ND 4.0 licensing—permanently royalty-free for academic research, university theses, non-commercial clinical services, and K–12 schools, while prohibiting commercial EdTech resale without permission. All 10 de-identified CSV datasets and R/Python code packages carry permissive CC-BY 4.0 licensing.
Audit & Reporting Rigor
Scale validations satisfy COSMIN standards for content validity (expert panels N = 16–28; cognitive probing N = 15–16 dyads) and longitudinal measurement error (ICC(2,1), SEM, MDC95). International adaptations follow ITC Guideline PC-1 via openinventories.org. Meta-analyses adhere to PRISMA 2020 with full-text forensic verification and statcheck audits.
Contact & Registered Office
For cross-national scale adaptation permissions (ITC Guideline PC-1), editorial and repository verification, or replication inquiries, please contact the Director’s office in Singapore.
Standard Institutional & Governance Record
Canonical reference metadata for editorial portals, repository verification, and multi-site IRB adaptation packets:
Center for Educational & Psychological Assessment (CEPA) Research Division, 5 Steps Academy Private Limited (UEN 201709130H) 143 East Coast Road, Singapore 428833 Director of Research: Alexander Kuznetsov, Ph.D. Email: alex@5steps.edu.sg | ORCID: https://orcid.org/0009-0002-6652-3544 IRB Authorization: Protocol #CEPA-2026-H4 Copyright Registry: U.S. Copyright Office Case #1-15290600571 Web: https://5steps.edu.sg | Portal: https://openinventories.org