How can discussion forum questions be effective in online MBA courses?

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" This study explored the effect of a new integrated Socratic questioning conversation theory teaching approach for an online MBA business strategy course. A quasi experiment was used to compare the new approach with the traditional technique used on the same course (with four course sections divided into a test and control group). Bias was controlled by having each of the two professors randomly teach a test and a control group course (applying the appropriate instructional technique). A correlation test proved that there was no bias from the professor (individual personality or ability). Additional correlation tests proved that there were no interactions or relations between demographic variables (age, gender, ethnic race) and the dependent variables. A pretest (prerequisite course) was used to indicate the academic ability of the student groups in these course sections were not significantly different. The student discussion and essay scores approximately a normal distribution." (p. 90)

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