  We administered the Verbal IQ (VIQ) part of the Wechsler Preschool and
Primary Scale of Intelligence (WPPSI-III) to the ConceptNet 4 AI system. The
test questions (e.g., "Why do we shake hands?") were translated into ConceptNet
4 inputs using a combination of the simple natural language processing tools
that come with ConceptNet together with short Python programs that we wrote.
The question answering used a version of ConceptNet based on spectral methods.
The ConceptNet system scored a WPPSI-III VIQ that is average for a
four-year-old child, but below average for 5 to 7 year-olds. Large variations
among subtests indicate potential areas of improvement. In particular, results
were strongest for the Vocabulary and Similarities subtests, intermediate for
the Information subtest, and lowest for the Comprehension and Word Reasoning
subtests. Comprehension is the subtest most strongly associated with common
sense. The large variations among subtests and ordinary common sense strongly
suggest that the WPPSI-III VIQ results do not show that "ConceptNet has the
verbal abilities a four-year-old." Rather, children's IQ tests offer one
objective metric for the evaluation and comparison of AI systems. Also, this
work continues previous research on Psychometric AI.
