In a large lecture hall, students were handed a drawing of a woman. Students didn’t know that those on the left side of the center aisle received a drawing of a young woman while those on the right side of the aisle were given a drawing of an old woman. A slide was then projected with an drawing that was an ambiguous combination of the two handouts and students were asked a series of questions.This is an example of which of the following? A blind observational study An observational study that isn’t blind A blind experiment An experiment that isn’t blind
Question
In a large lecture hall, students were handed a drawing of a woman. Students didn’t know that those on the left side of the center aisle received a drawing of a young woman while those on the right side of the aisle were given a drawing of an old woman. A slide was then projected with an drawing that was an ambiguous combination of the two handouts and students were asked a series of questions.This is an example of which of the following? A blind observational study An observational study that isn’t blind A blind experiment An experiment that isn’t blind
Solution
This is an example of a blind experiment. Here's why:
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The students were divided into two groups: those on the left side of the aisle and those on the right side. This is the first indication that this is an experiment rather than an observational study. In an observational study, researchers would not manipulate any variables or conditions.
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The students were given different drawings based on their seating arrangement, but they were not aware of this manipulation. This is what makes the experiment "blind". In a blind experiment, the participants do not know certain information that might lead to bias or influence their behavior.
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The ambiguous drawing projected on the slide is the "test" of the experiment. The students' responses to the questions about this drawing are the data being collected for the experiment.
So, this is a blind experiment because the students (the participants) were unaware of the manipulation of variables (the different drawings) and their responses were collected as data.
Similar Questions
In a ________ experiment neither the researcher nor the participants know which condition participants are in.a. blindb. double-blindc. randomd. confounded
______ studies are those in which participants do not know the experimental condition (group) to which they have been assigned.Multiple choice question.Single-blindDouble-blindExperimentalCorrelational
-blind studies are those in which neither the participants nor the researchers (at least the ones administering the treatment) know who has been assigned to the experimental or control group.
In which of the following research methods is the subject and the experimenter interacting with subjects is blind to the condition of the subject?
An experiment will be conducted to determine whether children learn their multiplication facts better bypracticing with flash cards or by practicing on a computer. Children who volunteer for the experiment will berandomly assigned to one of the two treatments. Because the children’s gender may affect the outcome, therewill be blocking by gender. After practice, the children will be given a test on their multiplication facts. Whywill it be impossible to conduct a double-blind experiment?(A) The experimenter will know whether the child is a boy or a girl and whether he or she used flash cards orthe computer.(B) The child will know whether he or she is a boy or a girl.(C) The child will know whether he or she used flash cards or the computer.(D) The person who grades the tests will know whether the child was a boy or a girl.(E) The person who grades the tests will know whether the child used flash cards or the computer.
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