NEW
Font size
WorksheetsHOW TO MANIPULATE AND CONTROL VARIABLES
Total questions: 15
Worksheet time: 8mins
What is instructional manipulation in experimental psychology?
Changing the number of participants in each group
Altering the actual events in the experiment
Changing the instructions given to participants to influence understanding or behavior
Removing a variable completely from the experiment
Which of the following best represents the Framing Effect?
Comparing the effects of hot and cold environments
“This vitamin is 90% effective” vs. “This vitamin has a 10% failure rate”
Participants are asked to focus on the sound of words
Showing either a baby or a car crash to participants
Priming instruction is used to:
Increase group size in random assignment
Activate certain thoughts or behaviors before the task begins
Introduce a control group in the study
Match participants based on pre-test scores
What is the purpose of goal-setting instruction in an experiment?
To motivate participants through varied task duration
To observe how different goal types affect performance
To limit the number of participants in each group
To introduce bias into the study deliberately
Which is an example of event manipulation?
Giving different instructions in two languages
Varying the room temperature to observe changes in emotion
Dividing participants based on gender
Giving all participants the same task order
What is an example of amount of variable manipulation?
One group exercises for 10 minutes; another for 40 minutes
Giving either positive or constructive feedback
Presenting instructions in two different languages
Having participants perform a task with or without a friend
What technique is used to control carry-over effects in within-subjects design?
Random assignment
Matching technique
ABBA counterbalancing
Deception method
What is random assignment?
Selecting people from a general population
Assigning people to groups based on IQ
Giving each participant an equal chance of being placed in any group
Choosing participants based on their behavior
Which method involves using a “fake treatment” to control treatment flaws?
Control group
Double-blind technique
Placebo
Baseline test
What does the double-blind technique help prevent?
Time-related effects
Physical fatigue in participants
Bias from both participants and experimenters
Learning and practice effects
What is the main purpose of a control group in an experiment?
To ensure participants get special treatment
To compare outcomes without the experimental manipulation
To confuse participants
To measure the effect of deception
Which strategy helps minimize experimenter expectancy effects?
Increasing the sample size
Using a standardized protocol or script
Conducting open-ended interviews
Asking participants to guess the hypothesis
What does counterbalancing help control in within-subjects designs?
Sampling bias
Long-term memory effects
Order effects such as practice or fatigue
Measurement errors
Which is an example of noise variable?
A consistent change in room temperature for all participants
A participant’s random mood fluctuations during the task
The independent variable being systematically manipulated
The use of a placebo
What is matching in the context of experimental design?
Pairing participants based on similarities (e.g., age, gender) before assigning treatments
Giving participants the same instructions
Randomly assigning tasks in different orders
Using the same experimenter for all groups
