 Finally, criticisms of the multiple realizability argument flourish—and are challenged—to the present day. Although the multiple realizability argument remains influential among nonreductive physicalists, it no longer commands the near-universal acceptance it once did. Replies to the multiple realizability argument based on neuroscientific details have appeared. For example, William Bechtel and Jennifer Mundale (1999) argue that neuroscientists use psychological criteria in brain mapping studies. This fact undercuts the likelihood that psychological kinds are multiply realized (for a review of recent developments see the  entry on multiple realizability  in this Encyclopedia).