First, Monika Mitra is a professor of disability policy, so she is also an expert. Second, it's a little ambiguous how much they disagree. To use slightly cont

First, Monika Mitra is a professor of disability policy, so she is also an expert. Second, it's a little ambiguous how much they disagree. To use slightly contrived numbers, it's possible the first group of experts and researchers think perception changes and increased honesty explain 2/3 of the increase, but Mitra things it explains 1/3. The wording also leaves open the possibility they basically agree with Mitra and just feel less confident ruling out changes in perception.