An anonymous reader writes "Artificial and natural knowledge researchers at the University of Illinois at Chicago have IQ-tested one of the best available artificial intelligence systems to see how intelligent it really is. Turns out–it's about as smart as the average 4-year-old. The team put ConceptNet 4, an artificial intelligence system developed at M.I.T., through the verbal portions of the Wechsler Preschool and Primary Scale of Intelligence Test, a standard IQ assessment for young children. They found ConceptNet 4 has the average IQ of a young child. But unlike most children, the machine's scores were very uneven across different portions of the test." If you'd like to play with the AI system described here, take note of the ConceptNet API documentation, and this Ubuntu-centric installation guide.