According to Francine Patterson , however , it is specious to compare her IQ directly with that of a human infant .
Gorillas develop locomotor abilities earlier than humans and many IQ tests for infants require mostly motor responses .
According to Francine Patterson , however , it is specious to compare her IQ directly with that of a human infant because gorillas develop locomotor abilities earlier than humans and many IQ tests for infants require mostly motor responses .