Key points are not available for this paper at this time.
Robert J. Blendon, Stephen R. Pelletier, Marcus D. Rosenbaum, Mollyann Brodie, Tax Uncertainty: A Divided America's Unformed View of the Federal Tax System, The Brookings Review, Vol. 21, No. 3 (Summer, 2003), pp. 28-31
Blendon et al. (Wed,) studied this question.