References
- Dwyer , F. M. 1968 . Effect of varying amount of realistic detail in visual illustrations designed to complement programed instruction . Percept. & Motor Skills , 27 : 351 – 354 .
- Dwyer , F. M. 1968 . The effectiveness of visual illustrations used to complement programed instruction . J. of Psychol. , 70 : 157 – 162 .
- Frase , L. T. 1968 . Some data concerning the mathemagenic hypothesis . Amer. Educ. Res. J. , 5 : 181 – 190 .
- Rothkopf , E. Z. and Bisbicos , E. E. 1967 . Selective facilitative effects of interspersed questions on learning from written materials . J. Educ. Psychol. , 58 : 56 – 61 .
- Sparks , J. N. 1963 . Expository notes on the problem of making multiple comparisons in a completely randomized design . J. Exper. Educ. , 4 : 344 – 349 .