Keb is convinced that teachers provide more praise to their students while he is observing in their classrooms than they do otherwise.
-Of the following the most appropriate way to decrease Keb's concerns and increase validity of his data is
A) to tell teachers he is interested in something unrelated to praise.
B) to focus on a smaller number of teachers.
C) increase the amount of time he spends in the classrooms.
D) observe the classes covertly.

Question

Quizplus · Accepted Answer

Increasing the amount of time Keb spends in the classrooms will allow him to gather more data and observe a wider range of teacher behaviors. This will increase the validity of his data and help him determine if his initial hypothesis is accurate or not. A larger sample size will also help to decrease the potential for bias or chance factors influencing his observations.

Keb Is Convinced That Teachers Provide More Praise to Their