Original sentence: Although IQ tests have changed substantially over the past half century, and many objections to the early tests have been addressed by 'culture neutral' tests (such as the Raven test), IQ testing remains controversial and even the usefulness of IQ measures remain controversial
Edited sentence: Although IQ tests have changed substantially over the past half century, and many objections to the early tests have been addressed by 'culture neutral' tests (such as the Raven test), IQ testing remains controversial