Psychometric Assessment Platform
Computerised adaptive tests grounded in state-of-the-art Item Response Theory. Faster, more accurate, and more clinically meaningful than traditional questionnaires.
About the platform
Traditional questionnaires ask every person every question, regardless of relevance. Our computerised adaptive tests select only the most informative items for each individual — delivering precise scores in far fewer questions.
Each test adapts in real time to your responses. Only the most informative questions are presented, typically reducing administration time by 50–70% compared with static scales.
All item banks are calibrated using modern Item Response Theory, providing scores on an interval scale with known standard errors at every level of the trait continuum.
Cutpoints and norm tables are derived from representative population samples. Scores can be interpreted for screening, case identification, and progress monitoring.
Item banks and scoring algorithms are grounded in peer-reviewed psychometric research, with full methodological documentation available for clinicians and researchers.
Designed for clinics, research studies, and self-guided assessment. No special training required — plain-language items accessible to adults at a broad range of literacy levels.
Covering the full breadth of the HiTOP model — from broad psychopathology to specific disorders — enabling both screening and differential assessment within a unified framework.
Process
Anyone can take a test in minutes. Behind the scenes, real-time IRT algorithms select optimal items and estimate scores with maximum precision.
Choose from the full range of available tests using the HiTOP taxonomy diagram below. You can start broad (overall psychological distress) or go straight to a specific disorder of interest.
Items are presented one at a time. Each answer updates the algorithm's estimate of your score and selects the single most informative next item. Most people complete a test in 3–7 minutes.
At the end of the test you receive a score with a confidence interval, an interpretation relative to population norms, and (where applicable) a clinical screening result.
Results can be printed or saved as a PDF summary. If you are participating in a research study, your anonymised score can be submitted directly to the study platform.
Assessment Library
Our assessments follow the Hierarchical Taxonomy of Psychopathology (HiTOP) — an evidence-based dimensional model organising mental health from broad spectra down to specific disorders. Click any node to launch that assessment.
Levels 1–3 launch spectrum-wide assessments. Level 4 nodes launch specific disorder CATs.
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Evidence Base
Every assessment has been developed and validated according to rigorous psychometric standards. Item banks are drawn from peer-reviewed literature and calibrated on large representative samples.
IRT models estimate latent trait levels and item parameters simultaneously, providing score estimates with known measurement error across the full trait range.
CAT algorithms select the optimal next item at each step using maximum Fisher information, halting when a precision threshold is reached or the item bank is exhausted.
The Hierarchical Taxonomy of Psychopathology is an empirically derived dimensional model replacing categorical diagnoses with continuous spectra grounded in factor analytic research.
Scores are referenced against nationally representative normative data, enabling meaningful clinical interpretation and percentile comparison.
"The HiTOP model offers a comprehensive, empirically grounded alternative to traditional nosologies, organising psychopathology from narrow symptoms to broad spectra within a unified dimensional framework."
"Computerised adaptive testing reduces administration burden by 50–75% while maintaining or improving measurement precision compared with full-length static instruments."
"IRT-based scoring provides estimates with known standard errors, enabling clinicians to quantify measurement uncertainty and set appropriate confidence thresholds."
⚠ Important: These assessments are designed for screening and research purposes. They are not diagnostic tools and do not replace clinical assessment by a qualified mental health professional.