#1
Which of the following is NOT a component of a well-designed laboratory experiment?
Randomization
Control group
Hypothesis
Survey
#2
What is the purpose of a control group in a laboratory experiment?
To serve as a baseline for comparison
To introduce bias into the experiment
To ensure randomization
To eliminate variability
#3
Which statistical test is commonly used to compare means between two groups in an experiment?
Chi-square test
ANOVA
T-test
Regression analysis
#4
What is the purpose of blinding in a laboratory experiment?
To eliminate bias from both the participants and the researchers
To make the experiment visually appealing
To increase the variability of the results
To simplify the experimental design
#5
What is the purpose of a pilot study in experimental design?
To gather initial data and test feasibility
To manipulate variables
To analyze final results
To perform statistical tests
#6
Which type of sampling method involves selecting participants based on their availability and willingness to participate?
Convenience sampling
Stratified sampling
Systematic sampling
Cluster sampling
#7
What does the term 'reliability' refer to in experimental design?
The consistency of measurement
The accuracy of measurement
The generalizability of results
The ability to establish causation
#8
What is the term used to describe the phenomenon where participants' behavior is influenced by their awareness of being observed?
Observer bias
Demand characteristics
Hawthorne effect
Experimenter expectancy effect
#9
What does it mean if an experiment has high internal validity?
The results can be generalized to the population
The experiment accurately measures what it intends to measure
There is little variability in the data
The experiment is conducted in a naturalistic setting
#10
Which of the following is NOT a criterion for establishing causality in experimental research?
Temporal precedence
Random assignment
Correlation
Controlling for alternative explanations
#11
What is the purpose of counterbalancing in experimental design?
To ensure that each participant experiences all conditions in the same order
To manipulate variables systematically
To control for order effects
To increase the sample size
#12
In a within-subjects design, participants are exposed to:
Different levels of independent variables in separate groups
A single level of the independent variable
The same level of the independent variable in different conditions
The dependent variable only
#13
Which of the following is a key feature of a quasi-experimental design?
Random assignment of participants to groups
Manipulation of the independent variable
Control over extraneous variables
Absence of a control group
#14
What is the main difference between an experimental and a correlational study?
The presence of a control group
The ability to establish causality
The manipulation of variables
The use of statistical analysis
#15
What is the term used to describe a situation where the measurement instrument consistently produces the same result over time?
Reliability
Validity
Sensitivity
Specificity
#16
Which of the following is a potential limitation of using a single-blind experimental design?
Participants may become aware of the experimental conditions
Researchers may introduce bias into the experiment
It requires a large sample size
It increases the risk of Type II error
#17
What is the purpose of a manipulation check in experimental research?
To ensure that participants understand the instructions
To verify that the experimental manipulation has the intended effect
To assess the generalizability of the results
To control for order effects
#18
In a factorial experimental design, how are factors typically manipulated?
One factor is manipulated at a time
All factors are manipulated simultaneously
Factors are not manipulated, only observed
Factors are manipulated in combination with each other
#19
Which of the following is a potential drawback of using a completely randomized design?
Increased variability
Difficulty in controlling extraneous variables
Reduced statistical power
High likelihood of biased results
#20
What is the purpose of a Latin square design in experimental design?
To control for extraneous variables
To increase statistical power
To counterbalance order effects
To manipulate multiple factors simultaneously
#21
What is the primary advantage of using a crossover design in experimental research?
Increased internal validity
Reduced likelihood of order effects
Greater generalizability of results
Simplified experimental procedures
#22
Which of the following is a potential limitation of using factorial experimental designs?
Increased complexity
Lower statistical power
Reduced control over extraneous variables
Inability to test interactions