An education researcher was interested in examining the effect of the teaching method and the teacher on students' reading levels.257 students participated in an experiment.There were two different teachers (Juliana and Felix)and three different teaching methods (A,B,and C).Students were randomly assigned to a teaching method and teacher.At the end of the semester the students took a reading test on which they received a score out of 20.Students who studied with Felix using method B achieved the highest scores.The person evaluating the results does not know which teacher or teaching method the students were assigned to.
A)Double blind
B)Single blind
C)Neither

Question

Quizplus · Accepted Answer

Single blind is the best choice in this scenario. The person evaluating the results does not know which teacher or teaching method the students were assigned to. Single blind means that the evaluator doesn't know one of the variables being tested, in this case, the teaching method or teacher. The other variable not being tested, in this case, the reading levels, is known to the evaluator. Double blind would require that both variables being tested are unknown to the evaluator. However, in this scenario, it is not necessary for the evaluator to be unaware of both variables, as the objective is to determine the effect of one variable (teaching method and teacher) on the reading levels. Therefore, single blind is sufficient to reduce the risk of bias in the evaluation of the results.

An Education Researcher Was Interested in Examining the Effect of the Teaching