Doris Denning wanted to study the relationship between high school students' grades and assessments of their teachers.After teaching her research assistants proper interviewing techniques,Doris provided them with fake transcripts and disciplinary histories,which depicted some students as exceptional and others as trouble-makers.In reality,the 'exceptional' students and 'trouble-makers' were labelled as such randomly.Once the assistants' interviews concluded,the data indicated 'exceptional' students held their teachers in much higher esteem than the 'trouble-makers.' What threat to internal validity does Doris' study most likely have?
A)Testing effect
B)Selection bias
C)Diffusion of treatment
D)Experimenter expectancy
E)Hawthorne effect

Question

Quizplus · Accepted Answer

The experimenter expectancy effect is likely present because the research assistants may have unconsciously influenced the interviews based on their expectations from the labels given to the students, affecting the students' responses.

Doris Denning Wanted to Study the Relationship Between High School