#1
Which of the following is an example of a qualitative research method?
Case study
ExplanationQualitative research explores phenomena in depth, often using methods like case studies to gather rich, contextual data.
#2
What is the purpose of a control group in an experiment?
To provide a baseline for comparison
ExplanationControl groups allow researchers to compare the effects of an experimental treatment by providing a baseline against which to measure changes.
#3
Which of the following is a measure of central tendency?
Median
ExplanationThe median represents the middle value in a dataset, providing a measure of central tendency that is less affected by extreme values.
#4
Which of the following is a measure of variability in a set of data?
Standard deviation
ExplanationStandard deviation measures the dispersion or spread of data points around the mean, providing insight into the variability within a dataset.
#5
What is the purpose of a research hypothesis?
To provide a tentative explanation for observed phenomena
ExplanationA research hypothesis is a tentative explanation for observed phenomena that guides the research process and helps generate testable predictions.
#6
What is the primary purpose of random assignment in experimental research?
To control for extraneous variables
ExplanationRandom assignment ensures that each participant has an equal chance of being assigned to any condition, minimizing the influence of extraneous variables.
#7
Which of the following best describes a correlation coefficient of -0.85?
A strong negative correlation
ExplanationA correlation coefficient of -0.85 indicates a strong negative relationship between variables, meaning as one variable increases, the other decreases.
#8
What is the purpose of conducting a pilot study in research?
To ensure the reliability and validity of the study's procedures
ExplanationPilot studies help researchers test and refine their procedures, ensuring they are reliable and valid before conducting the full study.
#9
What does it mean when research findings are said to have external validity?
The findings apply to other settings or populations
ExplanationExternal validity refers to the extent to which research findings can be generalized to other settings, populations, or conditions.
#10
Which of the following is NOT a type of reliability in research?
External validity reliability
ExplanationExternal validity is a concept related to the generalizability of research findings, not a type of reliability.
#11
Which of the following is an example of a quasi-experimental research design?
Nonequivalent control group design
ExplanationQuasi-experimental designs lack random assignment, such as the nonequivalent control group design, which compares groups that were not formed through random assignment.
#12
In a psychological experiment, what does it mean when a result is statistically significant?
The result is unlikely due to chance
ExplanationStatistical significance indicates that the observed result is unlikely to have occurred by chance alone, suggesting a real effect.
#13
What is the purpose of informed consent in psychological research?
To ensure participants are well-informed about the study
ExplanationInformed consent ensures that participants understand the purpose, procedures, risks, and benefits of the study before agreeing to participate.
#14
Which of the following is a measure of effect size?
Cohen's d
ExplanationCohen's d quantifies the size of the difference between two groups, providing insight into the practical significance of the findings beyond statistical significance.
#15
What is the purpose of conducting an analysis of variance (ANOVA) test?
To compare means across multiple groups
ExplanationANOVA is used to compare means across multiple groups, determining whether there are statistically significant differences between them.