Opinions for module 6.1 and 6.2

Sonja Damnjanovic Radovanovic 

1 posts

Re:Re:Module 6 DQ 2

Order effect would be one of the con of repeated measure design. What could a researcher do to counter this problem?

 “Consider Mary's study of whether the learning of 6th graders on a math lesson is affected by background noise level. Describe the pros and cons of Mary using a repeated measures design for this study. What would you probably choose to do? Support your responses.

The first pro for Mary to use repeated measure would allow her to remove the effects that come from individual differences. Hence, factors such as age among other important factors would remain similar. The second pro is that Mary would obtain few participants. Hence, it is easier and faster to recruit the 6th-grade students. However, the con of repeated measure approach would involve having the trouble of counter problems of order effect (Mackey & Gass, 2011). The effects could also come from repetition when Mary gives the 6th graders more time to adjust. The second con is that Mary will have to change the wording for participants to memorize. I would choose to use ANOVA to test two different groups. I will make different observations for the two groups. It will be easy to analyze data and make inferences (Sadooghi-Alvandi et al., 2012).

References

Mackey, A., & Gass, S.M. (2011). Research methods in second language acquisition: A practical guide. Hoboken, New Jersey: John Wiley & Sons

Sadooghi-Alvandi, S.M., Jafari, A.A., & Mardani-Fard, H.A. (2012). One-way ANOVA with unequal variances. Communications in Statistics: Theory & Methods, 41(22), 4200-4221”