Below, I append several references to studies of the similarities and differences between (non web-based) computer adaptive test and paper-pencil test equivalence. Most of these concern tests with correct and incorrect responses, rather than subjective self-reports. The conclusion seems to be that several individual characteristics better predict mode-of-assessment context effects than item characteristics (i.e., most tests are not any easier or more difficult via adaptive and non-adaptive computer assessment).

Clansing, C., & Schmitt, D. (1990). Paper versus CRT: Are reading rate and comprehension affected?Paper available from ERIC. (ERIC Document Reproduction Service No. ED323924)

Gould, J. D., Alfaro, L., Finn, R., Haupt, B.,&Minuto, A. (1987). Reading from CRT displays can be as fast as reading from paper. Human Factors, 29, 497–517.

Lee, J., Moreno, K. E., & Sympson, J. B. (1986). The effects of mode of test administration on test performance. Educational and Psychological Measurement, 46, 467–473.

Lunz, M. E., & Bergstrom, B. A. (1994). An empirical study of computerized adaptive test administration conditions. Journal of Educational Measurement, 31, 251–263.

Mason, B. J., Patry, M., & Bernstein, D. J. (2001). An examination of the equivalence between non-adaptive computer-based and traditional testing. Journal of Educational Computing Research, 24, 29–39.

Mazzeo, J., & Harvey, A. (1988). The equivalence of scores from automated and conventional educational and psychological tests (College Board Rep. No. 88-8). New York: College Entrance Examination Board.

Olsen, J. B., Maynes, D. D., Slawson, D., & Ho, K. (1989). Comparison of paper-administered, computer-administered and computerized adaptive achievement tests. Journal of Educational Computing Research, 5, 311–326.

Pomplun, M., & Custer, M. (2005). The score comparability of paper and pencil and computer K-3 reading tests. Journal of Educational Computing Research, 32, 153–166.

Pomplun, M., Custer, M., & Ritchie, T. D. (2006). Factors in paper-and-pencil and computer reading score differences at the primary grades. Educational Assessment, 11, 127-143.

Zandvliet, D., & Farragher, P. (1997). A comparison of computer administered and written tests. Journal of Research on Computers in Education, 29, 423–438.