PSY 290 FINAL EXAM ASSESSMENT | COMPLETE QUESTION
AND ANSWERS | 100% VERIFIED SOLUTIONS | GRADED A+
1. Deci and Ryan proposed that 3 fundamental needs are
required for human growth and fulfillment: relatedness, autonomy,
and competence. Susan thinks that if students have certain needs met
in psychology class, such as relatedness or autonomy, they will feel
happier and more satisfied with the class then if they do not.
Deci and Ryan are describing a while Susan is describing a :
Theory, hypothesis
2. What is the difference between a main effect and an interaction?:
Main ettects examine one independent variable at a time; interaction ettects examine how multiple
independent variables interact.
3. Dr. Gloss runs two experiments. In the first experiment, she finds
that a
t-test run on two groups of subjects produces a p value of .10. In
her second experiment she uses the exact same methods from the
first experiment on two different groups of subjects. She finds that
the difference between group means and the variance of each
group is exactly the same as the first experi- ment but she now has
a p value of .01. What would you explain the difference in p values?: An
increase in the number of subjects
4. Randall is trying to determine if adding chocolate on top of his
pastries increases his sales. On Saturday, he only sells pastries
without chocolate while on Sunday, he only sells pastries topped
with chocolate. He finds that he sells much more pastries on Sunday
when they are topped with chocolate. What type of experimental design
is Randall using?: Nonequivalent control group design
5. Which of the following is not applicable to single-N studies in
cases such as brain damage or lesions?: The use of t-tests comparing groups
6. Kelly runs an experiment assessing the self-confidence of a single
group of adolescents from ages 12-17. She uses the same
assessment for all subjects and finds that self-confidence increases
with the number of years they attend high school. She determines
,PSY 290 FINAL EXAM ASSESSMENT | COMPLETE QUESTION
AND ANSWERS | 100% VERIFIED SOLUTIONS | GRADED A+
that attending high school increases self-confi- dence. What type of
threat to internal validity would be the best alternative
explanation for her findings?: Maturation
7. Sandra measures the level of happiness across two groups of
subjects two weeks apart. One group receives a behavioral
intervention aimed at improving
, PSY 290 FINAL EXAM ASSESSMENT | COMPLETE QUESTION
AND ANSWERS | 100% VERIFIED SOLUTIONS | GRADED A+
happiness while the other group does not. She uses the same
happiness assessment at both time points. She finds that the
experimental group had normal levels of happiness before the
intervention that moderately increased after the intervention. In the
control group that did not receive the intervention, she finds
unusually high levels of happiness that went down to normal two
week later. What might explain her results for the control group?:
Regression to the mean
8. John wants to determine if consuming caffeine increases cognitive
task per- formance. He gives half of his participants a bottle of
water and half of his participants a bottle of cola. He then them
solve 25 math problems. He finds that people who drank caffeine
solve more problems than those who drank water. His lab mate
Gary decides to conduct the exact same study again to ensure
that he can find the same difference between the groups a second
time. However, this time he uses coffee instead of cola as a source of
caffeine. This study is known as a: Conceptual replication
9. Linda is interesten in examining the relationship between daily
stress and cardiovascular health for her senior psychology research
project. She decides to conduct a meta-analysis rather than a review
paper. What will Linda NOT do when conducting her meta-analysis?: Measure
daily stress and cardiovascular health in several new samples of participants
10. In typical psychology studies comparing how
different samples of people behave, we are interested in how
behave(s). In single-n studies, we are interested in how behave(s).:
Groups, a single person
11. Your friend Dominic is complaining about having the Police
Academy Exam (PAE), a test the is required to enter the police force.
He complains, "Tests like the PEA don't really measure how well
people actually do on the streets being a policeman, how could
they?" Dominic is questioning the of the test.: Criterion validity
12. What does an experimenter need to do to investigate a causal
AND ANSWERS | 100% VERIFIED SOLUTIONS | GRADED A+
1. Deci and Ryan proposed that 3 fundamental needs are
required for human growth and fulfillment: relatedness, autonomy,
and competence. Susan thinks that if students have certain needs met
in psychology class, such as relatedness or autonomy, they will feel
happier and more satisfied with the class then if they do not.
Deci and Ryan are describing a while Susan is describing a :
Theory, hypothesis
2. What is the difference between a main effect and an interaction?:
Main ettects examine one independent variable at a time; interaction ettects examine how multiple
independent variables interact.
3. Dr. Gloss runs two experiments. In the first experiment, she finds
that a
t-test run on two groups of subjects produces a p value of .10. In
her second experiment she uses the exact same methods from the
first experiment on two different groups of subjects. She finds that
the difference between group means and the variance of each
group is exactly the same as the first experi- ment but she now has
a p value of .01. What would you explain the difference in p values?: An
increase in the number of subjects
4. Randall is trying to determine if adding chocolate on top of his
pastries increases his sales. On Saturday, he only sells pastries
without chocolate while on Sunday, he only sells pastries topped
with chocolate. He finds that he sells much more pastries on Sunday
when they are topped with chocolate. What type of experimental design
is Randall using?: Nonequivalent control group design
5. Which of the following is not applicable to single-N studies in
cases such as brain damage or lesions?: The use of t-tests comparing groups
6. Kelly runs an experiment assessing the self-confidence of a single
group of adolescents from ages 12-17. She uses the same
assessment for all subjects and finds that self-confidence increases
with the number of years they attend high school. She determines
,PSY 290 FINAL EXAM ASSESSMENT | COMPLETE QUESTION
AND ANSWERS | 100% VERIFIED SOLUTIONS | GRADED A+
that attending high school increases self-confi- dence. What type of
threat to internal validity would be the best alternative
explanation for her findings?: Maturation
7. Sandra measures the level of happiness across two groups of
subjects two weeks apart. One group receives a behavioral
intervention aimed at improving
, PSY 290 FINAL EXAM ASSESSMENT | COMPLETE QUESTION
AND ANSWERS | 100% VERIFIED SOLUTIONS | GRADED A+
happiness while the other group does not. She uses the same
happiness assessment at both time points. She finds that the
experimental group had normal levels of happiness before the
intervention that moderately increased after the intervention. In the
control group that did not receive the intervention, she finds
unusually high levels of happiness that went down to normal two
week later. What might explain her results for the control group?:
Regression to the mean
8. John wants to determine if consuming caffeine increases cognitive
task per- formance. He gives half of his participants a bottle of
water and half of his participants a bottle of cola. He then them
solve 25 math problems. He finds that people who drank caffeine
solve more problems than those who drank water. His lab mate
Gary decides to conduct the exact same study again to ensure
that he can find the same difference between the groups a second
time. However, this time he uses coffee instead of cola as a source of
caffeine. This study is known as a: Conceptual replication
9. Linda is interesten in examining the relationship between daily
stress and cardiovascular health for her senior psychology research
project. She decides to conduct a meta-analysis rather than a review
paper. What will Linda NOT do when conducting her meta-analysis?: Measure
daily stress and cardiovascular health in several new samples of participants
10. In typical psychology studies comparing how
different samples of people behave, we are interested in how
behave(s). In single-n studies, we are interested in how behave(s).:
Groups, a single person
11. Your friend Dominic is complaining about having the Police
Academy Exam (PAE), a test the is required to enter the police force.
He complains, "Tests like the PEA don't really measure how well
people actually do on the streets being a policeman, how could
they?" Dominic is questioning the of the test.: Criterion validity
12. What does an experimenter need to do to investigate a causal
