CampbellD. T. “Factors Relevant to the Validity of Experiments in Social Settings.” Psychological Bulletin, LIV (1957), 297–311.
2.
EntwisleD. R. “Attensity: The Factor of Specific Set in School Learning.” Harvard Educational Review, 1961, in press.
3.
FeldtL. S. “A Comparison of the Precision of Three Experimental Designs Employing a Concomitant Variable.” Psychometrika, XXIII (1958), 335–353.
4.
HovlandC. I.JanisI. L.KelleyH. H.Communication and Persuasion. New Haven: Yale University Press, 1953.
5.
LanaR. E. “Pretest-Treatment Interaction Effects in Attitudinal Studies.” Psychological Bulletin, LVI (1959), 293–300. (a)
6.
LanaR. E. “A Further Investigation of the Pretest-Treatment Interaction Effect.” Journal of Applied Psychology, XLIII (1959), 421–422. (b)
7.
PiersE. V. Quoted in Psychological Abstracts, XXX (1956). Original report in Bulletin of Maritime Psychological Association, 1955 (Spring) 53–56, not seen.
8.
SolomonR. L. “An Extension of Control Group Design.” Psychological Bulletin, XLVI (1949), 137–150.