UMD PSYC300 Final Exam with all Correct & 100%
Verified Answers |Latest Version| Already Graded A+
A researcher randomly assigns patients with low back pain either to a treatment involving hypnosis
or to a treatment involving exercise. She then measures the level of low back pain after 3 months.
What type of design is this? ✔Correct Answer--Experimental single factor between subjects design
A researcher would like to compare the effectiveness of two different methods for teaching third-
grade mathematics. One group of students is randomly assigned to Dr. Smith's class using method I
and another group is randomly assigned to Dr. Jones' class using method II. At the end of the school
year, each child is given a standardized mathematics achievement test and the two groups of scores
are compared. What is the confounding variable in this study? ✔Correct Answer--The two teachers
The goal of the experimental research strategy is to establish the existence of ✔Correct Answer--A
cause-and-effect relationship between two variables
Researchers (Wookey, Graves, & Butler, 2009) sought to determine if a woman's attire influences
perceptions of her ability to perform a job.
Would you run this between or within subjects and why? ✔Correct Answer--It may be stronger to
do this between subjects since doing this within might be an obvious manipulation to participants
and they may change their responses due to social desirability.However, if you make a strong, logical
argument for between or within, you would earn the full points.
If we compared the exam scores on Exam 1 and Exam 2 for PSYC300 students. What test should we
use? ✔Correct Answer--Paired samples t-test
You are a researcher using an observational design to assess the relationship between wealth and
social support. You decide to measure wealth by the number of sponsored instagram posts within
the last 30 posts and social support with the number of likes a post receives.
Match each research design consideration with the most correct terminology. ✔Correct Answer---
Whether you can generalize your data to Facebook users: external validity
-Whether sponsored posts is an accurate indicator of wealth: internal validity
-The number of followers each user has: moderating variable
-recognizability of the brand sponsoring the post: confound
-the weather the day the posts were made: extraneous variable
How could you operationalize if someone is a student-athlete or not, observationally? ✔Correct
Answer--If a student is wearing University athletic clothing or accessories
A research asks the following empirical question: How does phone use before bedtime affect sleep?
Match the following responses with whether they would be potential independent or dependent
variables. ✔Correct Answer---Length of phone usage before bed: independent variable
-Hours of sleep: dependent variable
-Quality of sleep as measured by REM cycles: dependent variable
-Use of blue vision blockers before bed: independent variable
Verified Answers |Latest Version| Already Graded A+
A researcher randomly assigns patients with low back pain either to a treatment involving hypnosis
or to a treatment involving exercise. She then measures the level of low back pain after 3 months.
What type of design is this? ✔Correct Answer--Experimental single factor between subjects design
A researcher would like to compare the effectiveness of two different methods for teaching third-
grade mathematics. One group of students is randomly assigned to Dr. Smith's class using method I
and another group is randomly assigned to Dr. Jones' class using method II. At the end of the school
year, each child is given a standardized mathematics achievement test and the two groups of scores
are compared. What is the confounding variable in this study? ✔Correct Answer--The two teachers
The goal of the experimental research strategy is to establish the existence of ✔Correct Answer--A
cause-and-effect relationship between two variables
Researchers (Wookey, Graves, & Butler, 2009) sought to determine if a woman's attire influences
perceptions of her ability to perform a job.
Would you run this between or within subjects and why? ✔Correct Answer--It may be stronger to
do this between subjects since doing this within might be an obvious manipulation to participants
and they may change their responses due to social desirability.However, if you make a strong, logical
argument for between or within, you would earn the full points.
If we compared the exam scores on Exam 1 and Exam 2 for PSYC300 students. What test should we
use? ✔Correct Answer--Paired samples t-test
You are a researcher using an observational design to assess the relationship between wealth and
social support. You decide to measure wealth by the number of sponsored instagram posts within
the last 30 posts and social support with the number of likes a post receives.
Match each research design consideration with the most correct terminology. ✔Correct Answer---
Whether you can generalize your data to Facebook users: external validity
-Whether sponsored posts is an accurate indicator of wealth: internal validity
-The number of followers each user has: moderating variable
-recognizability of the brand sponsoring the post: confound
-the weather the day the posts were made: extraneous variable
How could you operationalize if someone is a student-athlete or not, observationally? ✔Correct
Answer--If a student is wearing University athletic clothing or accessories
A research asks the following empirical question: How does phone use before bedtime affect sleep?
Match the following responses with whether they would be potential independent or dependent
variables. ✔Correct Answer---Length of phone usage before bed: independent variable
-Hours of sleep: dependent variable
-Quality of sleep as measured by REM cycles: dependent variable
-Use of blue vision blockers before bed: independent variable
