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

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

Quizplus · Accepted Answer

This is single blind, as the person evaluating the results (presumably the researcher) does not know which teacher or teaching method the students were assigned to.

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