Research Data for Scientists

Open Science Database on Aphantasia

We provide anonymized test data from validated questionnaires VVIQ, PSIQ, and Binocular Rivalry for scientific research. All data comes from participants who explicitly consented to research sharing.

For Researchers

Free access to anonymized research data for scientific studies. Export in CSV and JSON.

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Scientific Background

History, prevalence, tests and current findings on aphantasia research.

Read Research Overview

Available Datasets

Three validated test instruments for measuring mental imagery ability:

VVIQ Data

Vividness of Visual Imagery Questionnaire – the gold standard for measuring visual imagery since 1973.

Score 16-8016 items

PSIQ Data

Plymouth Sensory Imagery Questionnaire – captures all 7 sensory modalities of mental imagery.

7 modalities21-35 items

Binocular Rivalry

Objective behavioral test – measures imagery priming without self-assessment.

ObjectivePriming score

Our Data Principles

We follow Open Science principles and prioritize data quality over quantity.

100%

Fully anonymized

No IP addresses, no cookies, no identifiable data.

Open

Open Science

Free access for verified researchers.

DSGVO

GDPR compliant

EU General Data Protection Regulation. Hosted in Germany.

Data Quality & Methodology

Our data undergoes multiple quality checks:

Only completed tests with full responses
No personal data – including no indirect identifiers
Structured format (JSON/CSV) with consistent schema
Complete documentation of data fields and scoring methods

Contribute to Research

Every completed test with research consent adds to the growing database.

Take a Test

Research Partners & Resources

These institutions actively research aphantasia:

University of Bonn University of Exeter Aphantasia Network

Citation

When using our data in publications:

aphantasie.de (2025). Aphantasia Community Survey [Dataset]. https://aphantasie.de/forschung

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