Dillehay, R.C. & Jernigan, L.R.The biased questionnaire as an instrument of persuasion. Journal of Personality and Social Psychology, 1970, 15, 144-150.
2.
Lana, R.E.Pretest sensitization. In R. Rosenthal and R. Rosnow (Eds.) Artifact in behavioral research. New York: Academic Press, 1969, P. 121-141.
3.
Lana, R.E. & Menapace, R.H.Subject commitment and demand characteristics in attitude change. Journal of Personality and Social Psychology , 1971, 20, 136-141.
4.
Rosenberg, M.J.The conditions and consequences of evaluation apprehension. In R. Rosenthal and R. Rosnow (Eds.) Artifact in behavioral research. New York: Academic Press, 1969, Pp. 280-349.
5.
Webb, E.J., Campbell, D.T., Schwartz, R.D., & Sechrest, L.B.Unobtrusive measures: nonreactive research in the social sciences. Chicago: Rand McNally, 1966.