PSYC 2301 HCC Online Test Questions
With Correct Answers
The alpha statistic tells us how likely it is that the results of our experiment occurred by
chance alone. - ANSWER True
To predict one variable from our knowledge of another variable, we would use a(n): -
ANSWER correlation
If a condition improves with a placebo treatment, then the condition was not real, but
only, "in the patient's head." - ANSWER False
What is used to control for the experimenter's expectation in an experiment? - ANSWER
a double blind study
Which Pearson "r" shows the strongest relationship between two variables? - ANSWER
r = -.80
Researchers wanted to see if adults were actually afraid of the dark by exposing them
to different levels of light in a room while measuring their heart rates. In this experiment,
who are the participants who were exposed to low lighting? - ANSWER experimental
group
Generalizability is MOST likely to be lacking in: - ANSWER a case study
In an experiment, the variable(s) which is/are a source of bias is/are: - ANSWER the
extraneous or confounding variable
Selection bias is countered by using: - ANSWER randomization
When an experimenter's expectations influence his/her findings, his/her study can be
criticized for: - ANSWER experimenter bias
What type of study would be best suited to measures peoples' attitudes? - ANSWER
survey
, Surveys are valid only if the subjects are a or an ______ sample of the population. -
ANSWER representative
When using an ex post facto study (quasi-experiment) the subjects are divided into at
least two groups via: - ANSWER a subjective variable
Most experiments tend to LACK: - ANSWER large and representative samples
You've volunteered to work in an elementary school, reading to a group of six children
once a week and evaluating their progress. On your first day, the teacher pulls you
aside and offers to give you the full scoop about each child: background, academic
performance, and so on. You politely decline. Why? - ANSWER All of these are good
reasons for refusing the information.
Research has shown that height and weight are strongly correlated. This is an example
of what kind of correlation? - ANSWER positive
In an experiment, researchers exposed half the children to 2 hours of violence on
television every day for a month and made sure the other half saw no violence on
television at all. At the end of the month, they measured the level of aggressiveness in
the children. Who were the children who weren't exposed to any violence on television?
- ANSWER control group
In the context of an experiment, participants in the experimental group: - ANSWER
receive a particular type of treatment.
In an experiment, researchers exposed half the children to 2 hours of violence on
television every day for a month and made sure the other half saw no violence on
television at all. At the end of the month, they measured the level of aggressiveness in
the children. What is (are) the dependent variable(s)? - ANSWER level of
aggressiveness at the end of the month
What statistical procedure do we use to determine the bottom line results of many
experiments? - ANSWER metanalysis
Researchers wanted to see if adults were actually afraid of the dark by exposing them
to different levels of light in a room while measuring their heart rates. In this experiment,
what are the different levels of light? - ANSWER independent variable
What are two key features to an experiment? - ANSWER manipulation and
randomization
Which is NOT an assumption we make in experimentation? - ANSWER random
assignment of subjects from the POPULATION to the SAMPLE is making the groups
similar on any characteristic that could influence the results of the study
With Correct Answers
The alpha statistic tells us how likely it is that the results of our experiment occurred by
chance alone. - ANSWER True
To predict one variable from our knowledge of another variable, we would use a(n): -
ANSWER correlation
If a condition improves with a placebo treatment, then the condition was not real, but
only, "in the patient's head." - ANSWER False
What is used to control for the experimenter's expectation in an experiment? - ANSWER
a double blind study
Which Pearson "r" shows the strongest relationship between two variables? - ANSWER
r = -.80
Researchers wanted to see if adults were actually afraid of the dark by exposing them
to different levels of light in a room while measuring their heart rates. In this experiment,
who are the participants who were exposed to low lighting? - ANSWER experimental
group
Generalizability is MOST likely to be lacking in: - ANSWER a case study
In an experiment, the variable(s) which is/are a source of bias is/are: - ANSWER the
extraneous or confounding variable
Selection bias is countered by using: - ANSWER randomization
When an experimenter's expectations influence his/her findings, his/her study can be
criticized for: - ANSWER experimenter bias
What type of study would be best suited to measures peoples' attitudes? - ANSWER
survey
, Surveys are valid only if the subjects are a or an ______ sample of the population. -
ANSWER representative
When using an ex post facto study (quasi-experiment) the subjects are divided into at
least two groups via: - ANSWER a subjective variable
Most experiments tend to LACK: - ANSWER large and representative samples
You've volunteered to work in an elementary school, reading to a group of six children
once a week and evaluating their progress. On your first day, the teacher pulls you
aside and offers to give you the full scoop about each child: background, academic
performance, and so on. You politely decline. Why? - ANSWER All of these are good
reasons for refusing the information.
Research has shown that height and weight are strongly correlated. This is an example
of what kind of correlation? - ANSWER positive
In an experiment, researchers exposed half the children to 2 hours of violence on
television every day for a month and made sure the other half saw no violence on
television at all. At the end of the month, they measured the level of aggressiveness in
the children. Who were the children who weren't exposed to any violence on television?
- ANSWER control group
In the context of an experiment, participants in the experimental group: - ANSWER
receive a particular type of treatment.
In an experiment, researchers exposed half the children to 2 hours of violence on
television every day for a month and made sure the other half saw no violence on
television at all. At the end of the month, they measured the level of aggressiveness in
the children. What is (are) the dependent variable(s)? - ANSWER level of
aggressiveness at the end of the month
What statistical procedure do we use to determine the bottom line results of many
experiments? - ANSWER metanalysis
Researchers wanted to see if adults were actually afraid of the dark by exposing them
to different levels of light in a room while measuring their heart rates. In this experiment,
what are the different levels of light? - ANSWER independent variable
What are two key features to an experiment? - ANSWER manipulation and
randomization
Which is NOT an assumption we make in experimentation? - ANSWER random
assignment of subjects from the POPULATION to the SAMPLE is making the groups
similar on any characteristic that could influence the results of the study
