References
- Austwick , K. , ed. 1964 . Programming , ’64. Bull. Res. Unit. Dept. Education, Univ. Sheffield .
- Ekman , Gosta . 1955 . The Four Effects of Group Behaviour in the Solution of Eureka‐type Problems . Psychometrika , XX : 139 – 148 .
- Guttman , Lewis . 1947 . The Cornell Technique for Scale and Intensity Analysis . Educational and Psychological Measurement , 1947 : 247 – 279 .
- Hayman , John L. 1963 . Viewer Location and Learning in Instructional Television . Audiovisual Communication Review , 11 ( 3 ) : 27 – 31 .
- Sawiris , Milad Y. 1965 . An Investigation of Individual and Group Learning Using a Linear Geometry Programme , 94 – 153 . University of London, Institute of Education . Ph.D. Thesis,