BBH 310 Exam 1 Practice Quizzes || with Error-free Solutions.
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Course
BBH 310
Institution
BBH 310
d) All of the above correct answers Let us say we are interested in seeing if the color of one's bedroom affects sleep duration. You hypothesize that a very strong, bright colors (e.g., red) will have a greater disturbing effect on sleep duration that more "restful" colors (e.g., blue). you decide ...
BBH 310 Exam 1 Practice Quizzes || with Error-free
Solutions.
d) All of the above correct answers Let us say we are interested in seeing if the color of one's
bedroom affects sleep duration. You hypothesize that a very strong, bright colors (e.g., red) will
have a greater disturbing effect on sleep duration that more "restful" colors (e.g., blue). you
decide to measure "sleep duration" by the number of minutes slept. Your subjects made a careful
note as to what time they fell asleep and what time they woke up. And sure enough, the "red"
group slept an average of 7 hours, while the "blue" group slept an average of 7.5 hours; a
difference that is large enough to be significant. So, room color seems to make a difference. In
this scenario, which of the following is a reasonable conclusion?
a) Room color explains some of the variability in sleep duration
b) Room color covaries with sleep duration
c) Room color is associated with sleep duration
d) All of the above
b) reliability; validity correct answers Tobias makes it a point to always check the weather for
the next day before he goes to bed. He notices that
every single time the weather forecast predicts rain for the next day, it never actually rains. And
every time the weather forecast predicts dry and sunny weather, it rains. He concludes that the
weather forecast has high ________ and low ________
.
a) validity; reliability
b) reliability; validity
b) inter-rater reliability correct answers A researcher is interested in learning about language
acquisition in infants.
As part of his experiments infants are presented with different faces on two
screens. At the same time, a particular sound is played and the researcher
films the infant to see whether the infant spends more time looking at the
face that produces the sounds being played or at the face that does not
match the sounds. Later,
two research assistants watch each video
and record the amount of time each baby was looking at the correct face. Because two research
assistants recorded these time measurements for
every video, the researchers are able to estimate the ___________ of this measure.
a) inter-item reliability
b) inter-rater reliability
c) test-retest reliability
d) Convergent validity
e) Gold standard validity
c)Test-retest reliability correct answers The researcher does some chemical work to be sure that
the measurement of Lyme disease antibodies in saliva is working properly. She divides a set of
samples into
, two and tests each replicate with the same kit twice to see how consistent the results are. She's
doing a(n) ________ study.
a)inter-observer reliability
b)Gold standard validity
c)Test-retest reliability
d)Inter-item reliability
e)Convergent validity
a)Convergent validity correct answers A researcher is interested in finding out a way to use brain
scans to estimate how tired people feel. When it comes to subjective things like feelings, there
are no perfect measures, because the best you can do is ask people about their feelings and hope
that they don't lie or exaggerate or use different standards of
what counts as "very tired" than other people. Anyway, the research team's goal is to scan the
brain, find some neurological signals that might relate to
sleep deficiency, and then correlate those neurological signals with
a survey question about "how tired do you feel?"
This is a study of
________.
a)Convergent validity
b)Gold standard validity
c)Inter-item reliability
d)Test-retest reliability
e)Inter-observer reliability
d)incorrect, because the error in his data is systematic correct answers A researcher is setting up
his lab and training a new research assistant on how to run through a certain protocol for a new
study. He notices that the research assistant applies the wrong formula for calculating body mass
index and as a result the body mass index scores for the affected participants are too low.
However, he decides that if he recruits a large enough sample, this won't result in a serious
problem with his data, because the error will average out. This conclusion is:
a)incorrect, because the error in his data is random
b)correct, because the error in his data is random
c)correct, because the error in his data is systematic
d)incorrect, because the error in his data is systematic
a) Systematic error correct answers Gold-standard validity studies are really the only way to
accurately quantify _______.
a) Systematic error
b) Random error
c)Experience of hearing sounds that have basis in the outside world correct answers Researchers
want to study auditory hallucinations in
deaf/formerly deaf audiology patients. Which is not
an operational definition of auditory hallucinations?
a)Number of times per day patients report hearing something that others cannot hear
b)Intensity of fMRI-detected signals in the auditory cortex in the absence of sound
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