#1
Which of the following is a method to control for extraneous variables in experimental research?
Random assignment
Confirmation bias
Selection bias
Observer bias
#2
What is the purpose of a placebo in an experiment?
To manipulate the independent variable
To deceive participants
To serve as a comparison for the experimental group
To induce demand characteristics
#3
How does counterbalancing help in experimental research?
It controls for order effects in repeated measures design
It eliminates confounding variables
It ensures random assignment
It prevents demand characteristics
#4
What is a confounding variable in experimental research?
The independent variable
A variable that is not controlled and may affect the dependent variable
The dependent variable
A variable used for statistical control
#5
What is the purpose of a pilot study in experimental research?
To test the statistical methods
To determine the sample size
To identify potential problems and make necessary adjustments
To collect data for the final analysis
#6
What is the purpose of debriefing in experimental research?
To provide feedback to the participants
To explain the true purpose of the study and address any concerns
To manipulate the dependent variable
To ensure random assignment
#7
What is the primary goal of a control group in an experiment?
To manipulate the independent variable
To serve as a baseline for comparison with the experimental group
To eliminate extraneous variables
To induce demand characteristics
#8
Which of the following threats to internal validity is related to participants dropping out of an experiment?
Maturation
Attrition
Testing effects
Regression to the mean
#9
What is the purpose of using a control variable in experimental research?
To manipulate the independent variable
To serve as a baseline for comparison
To ensure external validity
To eliminate random assignment
#10
What is the role of a research hypothesis in experimental research?
To guide the collection of data
To serve as the basis for ethical approval
To manipulate the dependent variable
To ensure participant blinding
#11
Which of the following is a potential ethical concern in experimental research?
Confirmation bias
Selection bias
Deception of participants
Observer bias
#12
In a double-blind experiment, who is unaware of which treatment group the participants are in?
Only the participants
Only the researchers
Both the participants and the researchers
Neither the participants nor the researchers
#13
What is demand characteristics in experimental research?
Characteristics of the research design
Cues that convey the experimenter's expectations to the participants
Variables that participants bring into the study
The inherent bias in a sample
#14
What does it mean when an experiment has internal validity?
The results can be generalized to a larger population
The experiment is consistent and free from confounding variables
The experiment is ethically sound
The participants are unaware of the purpose of the study
#15
Which of the following is an example of a quasi-experimental design?
Randomized controlled trial (RCT)
Pretest-posttest design with a non-equivalent control group
Factorial design
Cross-sectional study
#16
What is the difference between internal and external validity in experimental research?
Internal validity refers to the accuracy of measurements, while external validity refers to generalizability.
Internal validity refers to generalizability, while external validity refers to the accuracy of measurements.
Both terms are synonymous.
Neither term is relevant in experimental research.
#17
In the context of experimental research, what is a Type I error?
Failing to reject a false null hypothesis
Rejecting a true null hypothesis
Accepting a false alternative hypothesis
Failing to reject a true null hypothesis
#18
What is the purpose of a crossover design in experimental research?
To eliminate order effects in repeated measures design
To manipulate the independent variable
To control for extraneous variables
To ensure random assignment
#19
What is the purpose of a covariate in experimental research?
To manipulate the independent variable
To control for extraneous variables
To ensure external validity
To eliminate random assignment
#20
In experimental research, what is a manipulation check?
A measure to ensure ethical approval
A test to assess the validity of the manipulation of the independent variable
A statistical control procedure
A method to prevent demand characteristics