14. Research Design

[@jovidikromov1776]

Professor, I just came across this video and found it incredibly insightful, even 3 years after its publication. However, I have a question about a point you raised at 57:52. You mentioned that in the ideal social science experiment, ΔSx and ΔSu shouldn't be zero. From my understanding, though, in such experiments, it's generally crucial to aim for ΔSx = 0 and ΔSu = 0. This would mean ensuring equal variability (ΔSx) in the treatment and control groups, and no disparity in unmeasured variables (ΔSu) between them. The goal, as I understand it, is to isolate the treatment as the sole differing factor between the groups, allowing us to attribute any differences in outcomes specifically to the treatment. Could you please shed some light on this?

[@نوافرشيد-م8د]

Great video! Thank you very much. I was watching it for fun and extra knowledge.!

[@VuNguyen-io7pz]

Dear Dr King, would it be possible to upload the problem sets/assignments somewhere? I loved watching the videos, but feel like I haven´t grasped the subject matter the way I do when I am challenged to do exercises. Greetings and many thanks for the free knowledge from an aspiring social scientist from Germany.