Vector Psychometric Group

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Vector Psychometric Group (VPG) is proud to offer cutting-edge software for web-based data collection and item response data analysis. Authored by Li Cai, on...

Latest Videos

Introducing HLMix

Introducing HLMix

Vector Psychometric Group

400 views·3 years ago

LISREL - New Statistical Methods

LISREL - New Statistical Methods

Vector Psychometric Group

800 views·3 years ago

IRTPRO™ 6

IRTPRO™ 6

Vector Psychometric Group

407 views·3 years ago

General Item Response Theory (IRT) Modeling Framework

General Item Response Theory (IRT) Modeling Framework

Vector Psychometric Group

408 views·4 years ago

Overview of flexMIRT® Features

Overview of flexMIRT® Features

Vector Psychometric Group

437 views·4 years ago

Hierarchical Linear Models (aka Multilevel Modeling) The Basics

Hierarchical Linear Models (aka Multilevel Modeling) The Basics

Vector Psychometric Group

17.5K views·4 years ago

Inference for Variance Components in Hierarchical Linear Models

Inference for Variance Components in Hierarchical Linear Models

Vector Psychometric Group

540 views·4 years ago

Fixed Effects, Random Coefficients, and Centering

Fixed Effects, Random Coefficients, and Centering

Vector Psychometric Group

1.1K views·4 years ago

Vector Psychometric Group - NatokHD | NatokHD