 Correcting  their Stage 2 MUE procedure leads to a substantially smaller estimate of \lambda _{z a more subdued downward trending influence of ` other factor' z_{t} on the natural rate.
<meaning-changed>  Correcting  their Stage 2 MUE procedure leads to a substantially smaller estimate of \lambda _{z a more subdued downward trending influence of ` other factor' z_{t} on the natural rate.
 Correcting the misspecification in their Stage 2 MUE procedure leads to a substantially smaller estimate of \lambda _{z a more subdued downward trending influence of ` other factor' z_{t} on the natural rate.