Variables and Operationalization
Psychology ⇒ Research Methods in Psychology
Variables and Operationalization starts at 10 and continues till grade 12.
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A researcher is studying the effect of exercise on mood. She measures mood by asking participants to rate their happiness on a scale from 1 to 10. What is the operational definition of 'mood' in this study?
A researcher measures 'intelligence' by the score on a standardized IQ test. What is the operational definition of intelligence in this study?
A researcher wants to study the effect of caffeine on memory. She gives one group caffeinated coffee and another group decaffeinated coffee, then tests their memory. What is the independent variable in this study?
A researcher wants to study the relationship between hours spent studying and exam scores. What is the dependent variable?
A psychologist wants to measure 'happiness' in a study. Which of the following is NOT an operational definition? (1) Number of times a person smiles in an hour, (2) Self-reported happiness on a scale of 1-10, (3) The concept of happiness as a general feeling, (4) Levels of serotonin in the brain
A researcher is studying the effect of exercise on mood. She measures mood by asking participants to rate their happiness on a scale from 1 to 10. What is the operational definition of 'mood' in this study?
A researcher measures 'intelligence' by the score on a standardized IQ test. What is the operational definition of intelligence in this study?
A researcher wants to study the effect of caffeine on memory. She gives one group caffeinated coffee and another group decaffeinated coffee, then tests their memory. What is the independent variable in this study?
A psychologist wants to measure 'happiness' in a study. Which of the following is NOT an operational definition? (1) Number of times a person smiles in an hour, (2) Self-reported happiness on a scale of 1-10, (3) The concept of happiness as a general feeling, (4) Levels of serotonin in the brain
Which of the following best describes a confounding variable? (1) A variable that is intentionally manipulated, (2) A variable that is measured as an outcome, (3) A variable that unintentionally influences the results, (4) A variable that is kept constant
Which of the following is a continuous variable? (1) Number of siblings, (2) Age in years, (3) Gender, (4) Marital status
Which of the following is a ratio variable? (1) Number of books read, (2) Type of car, (3) Level of education, (4) Favorite color
Fill in the blank: A variable that can only take on certain values, such as whole numbers, is called a __________ variable.
Fill in the blank: A variable that can take on different values is called a __________.
Fill in the blank: In a study examining the effect of noise on concentration, the level of noise is the __________ variable.
Fill in the blank: In a study, the variable that is kept the same to prevent it from affecting the outcome is called a __________ variable.
True or False: A confounding variable can threaten the internal validity of an experiment.
True or False: A variable must always be directly observable.
True or False: A variable that stays the same throughout an experiment is called a control variable.
True or False: All variables in psychological research must be quantifiable.
