BAPSY BAPSY Bachelor of Arts in Psychology Psychological Research Methods Questions and Answers 2 — Questions and Answers
Question 1: A researcher studies the relationship between sleep duration and test performance without manipulating any variables. What type of research design is this?
- Correlational design (Correct answer)
- True experimental design
- Quasi-experimental design
- Single-subject design
Correct answer: Correlational design
A correlational design examines the relationship between two or more variables without any manipulation by the researcher.
Question 2: Which measure of central tendency is most appropriate for a data set with extreme outliers?
- Mean
- Median (Correct answer)
- Mode
- Standard deviation
Correct answer: Median
The median is resistant to extreme scores because it represents the middle value rather than being influenced by outlier magnitudes.
Question 3: What does a p-value of 0.03 indicate in hypothesis testing?
- There is a 3% probability the results occurred by chance assuming the null hypothesis is true (Correct answer)
- The effect size is 3%
- The experiment has 97% power
- There is a 3% chance the alternative hypothesis is wrong
Correct answer: There is a 3% probability the results occurred by chance assuming the null hypothesis is true
A p-value of 0.03 means there is a 3% probability of obtaining results at least as extreme as those observed if the null hypothesis were true.
Question 4: A psychologist wants to study how memory changes from childhood through old age by testing people of different ages at the same point in time. Which design is being used?
- Longitudinal design
- Cross-sectional design (Correct answer)
- Sequential design
- Time-series design
Correct answer: Cross-sectional design
A cross-sectional design compares different age groups at a single point in time to examine developmental differences.
Question 5: Which type of validity refers to whether a study's findings can be generalized to other settings and populations?
- Internal validity
- External validity (Correct answer)
- Construct validity
- Face validity
Correct answer: External validity
External validity concerns the extent to which research findings can be applied beyond the specific conditions of the original study.
Question 6: In a double-blind experiment, who is unaware of which participants are in the experimental versus control group?
- Only the participants
- Only the researchers
- Both the participants and the researchers administering the treatment (Correct answer)
- The institutional review board
Correct answer: Both the participants and the researchers administering the treatment
In a double-blind procedure, neither the participants nor the researchers who interact with them know which condition each participant is assigned to.
BAPSY BAPSY Bachelor of Arts in Psychology Psychological Research Methods Questions and Answers 2
A researcher studies the relationship between sleep duration and test performance without manipulating any variables.
What type of research design is this?