STANISLAUS PSYC 2010 PSYCHOLOGY
EXAM WITH ACTUAL QUESTIONS AND
VERIFIED ANSWERS, PLUS EXPLAINED
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1.
A psychology professor observes that students who consistently receive adequate sleep tend to
perform better on memory tests. The professor then develops a hypothesis that sleep improves
memory consolidation and conducts a controlled study comparing students who receive different
amounts of sleep. Which feature most clearly distinguishes this approach as scientific
psychology?
A. The professor relies primarily on personal experience and intuition.
B. The professor develops a testable hypothesis and systematically collects empirical evidence.
C. The professor assumes that improved grades necessarily prove improved memory.
D. The professor asks students whether they believe sleep is important.
Answer: B.
Rationale: A scientific approach requires testable hypotheses and systematic empirical
observation. Personal beliefs or correlations alone cannot establish a scientific explanation.
The professor's progression from observation to hypothesis to controlled data collection
reflects the empirical foundation of psychology.
2.
A researcher wants to determine whether exposure to violent video games causes an increase in
aggressive behavior. Participants are randomly assigned either to play a violent game or a
nonviolent game, and their subsequent behavior is measured under standardized conditions.
What is the independent variable?
A. Participants' aggressive behavior
B. Participants' age
C. Type of video game played
D. Participants' reaction time
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,Answer: C.
Rationale: The independent variable is the factor deliberately manipulated by the researcher.
Here, the researcher manipulates the type of video game participants play. Aggressive
behavior is the dependent variable because it is the outcome being measured.
3.
A researcher discovers that students who spend more hours studying tend to earn higher
examination scores. However, the researcher does not manipulate study time or randomly assign
students to different study schedules. Which conclusion is most scientifically appropriate?
A. Studying definitely causes higher examination scores.
B. Higher examination scores definitely cause students to study more.
C. Study time and examination performance are positively associated, but causation cannot be
established.
D. There is no relationship between study time and examination performance.
Answer: C.
Rationale: A correlation indicates that two variables are related but does not by itself establish
causation. Other variables, such as motivation, prior academic preparation, or socioeconomic
circumstances, could contribute to the relationship.
4.
A psychologist is studying depression in college students. Instead of selecting only students who
volunteer, the researcher randomly selects students from the entire university enrollment list.
What is the primary advantage of this procedure?
A. It guarantees that the study will establish causation.
B. It reduces selection bias and can improve representativeness.
C. It guarantees that every participant will complete the study.
D. It eliminates the need for statistical analysis.
Answer: B.
Rationale: Random selection gives members of the population an opportunity to be included
and can reduce systematic selection bias. It improves the ability to generalize findings to the
broader population, although it does not automatically establish causation.
5.
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,A participant in a psychology experiment is told that participation is voluntary, that the
participant can withdraw at any time, and that reasonable risks will be explained before
participation. Which ethical principle is most directly illustrated?
A. Informed consent
B. Random assignment
C. Operationalization
D. Debriefing
Answer: A.
Rationale: Informed consent requires participants to receive relevant information about a
study and voluntarily agree to participate. The ability to withdraw is also an important
component of ethical research participation.
6.
A researcher defines “academic stress” as the participant's score on a standardized 20-item stress
questionnaire. What does this definition represent?
A. A correlation coefficient
B. An operational definition
C. A confounding variable
D. A population parameter
Answer: B.
Rationale: An operational definition specifies exactly how an abstract psychological concept
will be measured or manipulated. Because academic stress is being defined through a specific
questionnaire score, the researcher has operationalized the construct.
7.
A researcher measures the relationship between hours of sleep and reaction time. The correlation
coefficient is −0.82. Which interpretation is most accurate?
A. There is a strong positive relationship.
B. There is a weak negative relationship.
C. There is a strong negative relationship.
D. Sleep causes reaction time to decrease by 82%.
Answer: C.
Rationale: A correlation coefficient ranges from −1.00 to +1.00. A value of −0.82 represents a
strong negative association: as one variable increases, the other tends to decrease. The
coefficient alone does not establish causation.
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, 8.
A student experiences a sudden increase in heart rate, sweating, rapid breathing, and heightened
alertness after hearing what sounds like an intruder outside the bedroom. Which physiological
system is most immediately responsible for preparing the body for rapid action?
A. Parasympathetic nervous system
B. Sympathetic nervous system
C. Somatic sensory system
D. Endocrine reproductive system
Answer: B.
Rationale: The sympathetic nervous system activates the body's rapid “fight-or-flight”
response. It increases physiological arousal, including heart rate and respiration, preparing
the organism to respond to a potential threat.
9.
Which statement best describes the function of the parasympathetic nervous system?
A. It prepares the body for intense physical activity.
B. It primarily controls voluntary skeletal-muscle movement.
C. It helps restore the body toward a calmer state after arousal.
D. It produces conscious visual perception.
Answer: C.
Rationale: The parasympathetic nervous system is associated with “rest-and-digest” functions.
It helps conserve energy and return physiological activity toward baseline following
sympathetic arousal.
10.
A patient has difficulty forming new long-term explicit memories following damage to a
particular brain structure. Which structure is most strongly associated with this function?
A. Hippocampus
B. Medulla
C. Cerebellum
D. Occipital lobe
Answer: A.
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