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BBH 310 Exam 1 Practice Questions || with 100% Correct Answers.
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  • BBH 310

In a properly designed experiment, an "independent variable" is: correct answers A predictor that is randomly assigned A research team studies the relationship between consumption of expensive French wine and IQ. They find that drinking more French wine is associated with higher IQ, and this fir...

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  • October 30, 2024
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  • 2024/2025
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  • in a properly designed experiment an independent

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BBH 310 Exam 1 Practice Questions || with 100% Correct
Answers.
In a properly designed experiment, an "independent variable" is: correct answers A predictor that
is randomly assigned

A research team studies the relationship between consumption of expensive French wine and IQ.
They find that drinking more French wine is associated with higher IQ, and this first research
team suggests that red wine has chemicals that are good for the brain. However, a second
research team suggests that red wine chemicals do nothing, and rather the reason for the
association is because high IQ helps people to drink morefancy wine(because they're
wealthy).The second research group's counter-argument that IQ causes more wine drinking
rather than the wine drinking causing improved IQ is an argument for: correct answers Reverse
causality (the thing we were calling the predictor is actually not a cause but an effect the thing
we were calling the outcome)

A certain mutation in a particular gene encoding a receptor is associated with reduced risk of
becoming addicted to smoking. The reasonfor the risk reduction is a reduced binding affinity for
nicotine at the receptor. In this example, what is the predictor, mechanism, and outcome? correct
answers The predictor is the genetic mutation, the mechanism is nicotine binding, smoking is the
outcome

Imagine we are part of a research team studying psychological effects on blood pressure. In one
experiment, we investigate two factors that may influence blood pressure: the excitement of
winning money and having a risk-taker personality. Which predictor variable is more difficult to
randomly assign in an experiment? correct answers Risk taker personality

When a scientist starts with a grand theory that two variables should be related, and then based
on that assumption decides to test it and evaluate whether those ideas end up being true in the
real world, this is based on the logical process of ______. correct answers Deduction

In order to save the lives of thousands of people who are on organ transplant waiting lists and
cannot get the transplants, researchers develop pigs that have some of the cell surface receptor
genes changed to be genetically human, so that the pig genes can be put into people. Some
people think it's not right to kill an animal that is partly genetically human. Some people think
it's not right to kill an animal to save a human. And some people think it's not right to let people
die when you have a way to save them, even if it means killing a few genetically engineered
pigs. This question of what is right is a question of ____________. correct answers Ethics

What kind of evidence is good enough to agree something is true? What are our standards for
calling something "incontrovertible truth"? These kinds of questions are best classified as the
domain of __________________. correct answers Epistemology

What is the IACUC? correct answers A group of people who check scientific plans for ethics and
legal compliance

, Scientists care about all of the following things. But which of the following is considered the
most fundamental and important foundation of empirical truth? The bottom line for empiricism
is: correct answers Observations of the natural world

Researchers randomly assign 50 people who have just been diagnosed with major depression to
either get Prozac or a placebo. Then 6 months later they are assessed to see if they are still
depressed. The researchers publish their results in a __________. correct answers Primary
research article

Suppose you are looking at a distribution of exam scores in BBH 310. Most students get scores
in the 70-90% range, some get in the 90s or the 60s, and there are a few outliers that are very low
(like 30%-50%).

Which number will be the lowest? correct answers mean

Anger can be assessed with a multiple choice question, with options like very angry, somewhat
angry, not angry, etc. This variable is measured on a(n) ______________________. correct
answers Ordinal categorical scale

Researchers want to study auditory hallucinations in deaf/formerly deaf audiology patients.
Which is not anoperationaldefinition of auditory hallucinations? correct answers Experience of
"hearing sounds" that have no real origin in the outside world

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, he ends up getting
soaked. He concludes that the weather forecast has high ________ and low ________ . correct
answers reliability; validity

Gold-standard validity studies are really the only way to accurately quantify _______. correct
answers Systematic error

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. correct answers inter-rater reliability

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. correct answers Test-retest reliability

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