Which description best distinguishes a psychological theory from a hypothesis?
Introduction to Psychology Online Quiz Questions
Use this free practice quiz with 20 questions to review Introduction to Psychology, test your knowledge, and prepare for your next test or exam.
A researcher studies how reinforcement changes studying behavior and how students' beliefs affect their emotional reactions. Which psychological perspectives are being used? Select all correct choices.
- A
Behavioral
- B
Psychodynamic
- C
Cognitive
- D
Sociocultural
Psychology is both a natural science and a social science.
- A
True
- B
False
In what year did Wilhelm Wundt establish the psychology laboratory at the University of Leipzig? Enter the four-digit year only.
In psychological research, an states exactly how a variable will be measured, while a is a specific, testable prediction derived from a theory.
A psychologist wants to compare a mindfulness exercise with a neutral activity and draw a stronger causal conclusion. Which procedure is most important for distributing preexisting participant differences between the two conditions?
- A
Using a larger dependent-variable measure
- B
Asking participants to choose their preferred condition
- C
Assigning participants to conditions by chance
- D
Repeating the same survey question several times
What is the two-word term for a statement that specifies exactly how a psychological variable will be measured?
A study finds that as reported sleep duration increases, average daytime fatigue tends to decrease. This pattern is best described as a negative correlation.
- A
True
- B
False
A researcher observes that ice-cream sales and sunburns rise together during some months. Explain why this correlation does not show that buying ice cream causes sunburns. Identify at least one alternative explanation and describe what kind of evidence would be needed for a causal conclusion.
A test that produces similar results under consistent conditions has high , although it may still lack validity if it does not measure what researchers intend.
A study is carefully controlled, but its participants all come from one unusual setting. Which concept should researchers examine when asking whether the findings apply to people and situations outside that setting?
- A
External validity
- B
Internal validity
- C
Reliability
- D
Operational definition
A psychologist wants to study stress experimentally. Which option is the best operational definition of stress?
- A
Asking participants whether they feel stressed without specifying a response method
- B
Defining stress as participants' heart rate during a standardized task
- C
Assuming that stressful events always produce the same reaction
- D
Describing stress as an unpleasant feeling
Why do researchers randomly assign participants to experimental and control conditions?
- A
It guarantees that every participant will respond identically
- B
It ensures that the sample represents every population
- C
It helps distribute preexisting differences between groups
- D
It eliminates the need to measure the dependent variable
A study finds a positive correlation between hours of sunlight and ice-cream sales. What does this result directly indicate?
- A
The variables tend to increase together
- B
One variable definitely causes the other
- C
The variables have no relationship
- D
One variable increases whenever the other decreases
A study uses only volunteers from one specialized training program. Which question is most directly relevant when evaluating the study's external validity?
- A
Whether the measure gives consistent results
- B
Whether the study supports a causal conclusion within the experiment
- C
Whether participants were assigned randomly
- D
Whether findings generalize to other people and settings
A research team redesigns a procedure to reduce psychological distress while preserving its scientific value. Which Belmont principle is the team applying most directly?
- A
Justice
- B
Beneficence
- C
Respect for persons
- D
Confidentiality
True or false: A statistically significant correlation between two variables is sufficient evidence that one variable causes the other.
- A
True
- B
False
What research design follows the same participants over time to study individual change?
Enter the name of the perspective associated with William James that asks how mental processes and behavior help organisms adapt to their environments.
A university study temporarily withholds its exact purpose to reduce expectancy effects. Which practices are consistent with the ethical safeguards described in the material? Select all that apply.
- A
Obtain appropriate institutional review before conducting the study.
- B
Use deception only when it is scientifically justified and does not conceal significant risks.
- C
Explain the study's purpose and procedures to participants afterward through debriefing.
- D
Tell participants that they cannot withdraw once the study begins.
- E
Use deception whenever it is likely to produce cleaner results.
- F
Omit information about risks because revealing them could affect the results.