HovlandC. I.LumsdaineA. A.SheffieldF. D.Experiments on mass communication. Princeton: Princeton Univer. Press, 1949.
2.
MayM. A.LumsdaineA. A.Learning from films. New Haven: Yale Univer. Press, 1958.
3.
MichaelD. N.MaccobyN.Factors influencing verbal learning from films under conditions of audience participation. J. exp. Psychol., 1953, 46, 411–418.
4.
NewmanS. E.HighlandR. W.The effectiveness of four instructional methods at different stages of a course. AFPTRC, Tech. Rep., AFPTRC-TN-56-88, June, 1956.
5.
WolffP. C.BurnsteinD. D.Van LooJ. A.The effects of schedules of collective reinforcement on a class during a target detection course. Percept. mot. Skills, 1962, 15, 727–735.