Dr.LaGuardia is curious as to whether children in a daycare center will share more after watching an educational video on sharing.Immediately before and after the video,he has several undergraduate research assistants code the sharing behavior of a group of 33 four-year-olds.Which of the following would you NOT recommend to him to decrease the threat of instrumentation?
A)Establishing the reliability and validity of his coders at pretest
B)Establishing the reliability and validity of his coders at posttest
C)Using clear coding manuals
D)Using only one research assistant to code all the videos

Question

Quizplus · Accepted Answer

Using only one research assistant to code all the videos would introduce a potential threat to the reliability of the data, as the coding may be impacted by the individual biases and subjectivity of the single coder. Therefore, it is recommended to use multiple coders and establish inter-rater reliability both before and after the video. Clear coding manuals also help ensure consistency in coding across coders.

DrLaGuardia Is Curious as to Whether Children in a Daycare