Psychology - Unit 2 exam
26: Which of the following correlation coefficients expresses the weakest degree of relationship between two variables? A:-0.12 B:1.00 C: -0.99 D:+0.25
A - -0.12
45: Mr. and Mrs. Klostreich have six children aged 5, 6, 6, 7, 8, and 16. The mean age of the Klostreich children is A: 8 B: 5 C: 6 D: 7
A - 8
36: Sleep researchers who are interested in brain wave activity are likely to use which kind of brain scan? A: EEG B: CT C: IMRI D: PET
A - EEG
28: The movement of positively charged ions across the membrane of a neuron can produce a(n) A: action potential B: synapse C: neurotransmitters D: myelin sheath
A - action potential
21: Sleep and meditation are examples of A: altered states of consciousness B: hallucinations C: circadian rhythms D: meditation
A - altered states of consciousness
2: The outer layer of the brain is called the A: cerebral cortex B: cerebrum C: corpus callosum D: cerebellum
A - cerebral cortex
32: an undersupply of serotonin is most closely linked to A: depression B: Alzheimer's disease C: schizophrenia D: Parkinson's disease
A - depression
43: A correlation coefficient is a measure of the A: difference between the highest and lowest scores in a distribution B: average squared deviation of scores from a sample mean C: direction and strength of the relationship between two variables D: frequency of scores at each level of some measure
A - difference between the highest and lowest scores in a distribution
3: Damage to Broca's Area and Wernicke's Area of the brain can cause A: difficulties in producing and understanding speech B: short-term memory loss C: loss of hearing D: all of the above
A - difficulties in producing and understanding speech
38: Nerve cells in the brain receive life-supporting nutrients and insulating myelin from A: glial cells B: neurotransmitters C: motor neurons D: hormones
A - glial cells
4: Amphetamines have been used to A help people stay awake B: slow the activity of the nervous system C: cure addiction to morphine D: deaden the pain of soldiers suffering battle wounds
A - help people stay awake
47: To trigger a person's hand to make a fist, Jose stimulated the individual's A: motor cortex B: hypothalamus C: sensory cortex D: reticular formation
A - motor cortex
27: The slowdown of neural communication in multiple sclerosis involves a degeneration of the A: myelin B: dendrites C: endocrine gland D: pituitary gland
A - myelin
50: Acetylcholine and dopamine, which help control movement, are examples of A: neurotransmitters B: chromosomes C: glands D: axons
A - neurotransmitters
5: Many of our basic biological functions, such as breathing, exist at the A: nonconscious level B: preconscious level C: conscious level D: unconscious level
A - nonconscious level
20: Synapses are located between A: the axons of one neuron and the dendrites of another B: the forebrain and midbrain C: the hemispheres of the cerebral cortex D: the pituitary gland and the hypothalamus
A - the axons of one neuron and the dendrites of another
17: One of the most useful types of studies for showing the influence of heredity and environment examines A: twins who have been reared apart B: identical twins C: fraternal twins D: siblings and step-sibilings
A - twins who have reared apart
46: Mr. and Mrs. Berry have five children aged 2, 3, 7,9, and 9. The median age of the Berry children is A:3 B: 7 C: 6 D: 5
B - 7
44: Because she had a serious traffic accident on Friday the 13th of last month, Felicia is convinced that all Friday the 13ths will bring bad luck. Felicia's belief best illustrates A: the illusion of control B: illusory correlation C: hindsight bias D: overconfidence
B - illusory correlation
19: When you touch a hot object with your right hand, that information is sent to the A: pituitary gland B: left hemisphere of the brain C: limbic system D: right hemisphere of the brain
B - left hemisphere of the brain
49: When Stoyka was a child, a brian disease required the surgical removal of her left cerebral hemisphere. Stoyka is now a successful high school student who lives a normal life. Her success best illustrates the importance of A: aphasia B: plasticity C: tomography D: phrenology
B - plasticity
8: The pituitary gland is known as the "master gland" because it A: controls which information travels between the brain's hemispheres B: secrete many hormones that affect a wide range of behaviors C: is the largest gland D: does all of the above
B - secrete many hormones that affect a wide range of behaviors
34: When Mr. Valez thought his one year-old daughter had fallen down the stairs, his heartbeat accelerated, his blood pressure rose, and he began to perspire heavily. Mr. Valdez's state of arousal was activated by his ____ nervous system A: parasympathetic B: sympathetic C: somatic D: sensorimotor
B - sympathetic
13: The fight-or-flight" response to a stressful event is activated by the A: parasympathetic nervous system B: sympathetic nervous system C: hypothalamus D: thyroid gland
B - sympathetic nervous system
35: Endocrine glands secrete hormones directly into A: synaptic gaps B: the bloodstream C: dendrites D: sensory neurons
B - the bloodstream
22: The adrenal glands produce A: estrogen and testosterone B: the hormones adrenaline and noradrenaline C: the hormone thyroxine D: all of the above
B - the hormones adrenaline and noradrenaline
24: Using the graphs above, which of the following scatterplots represent the weakest relationship? A: 1 B: 2 C: 3 D: 4
C - 3
14: Slurred speech, blurred vision, and impaired judgment are the results of A: cocaine B: nicotine C: intoxication D: amphetamines
C - intoxication
6: Some people who have taken LSD suffer long-term side effects that include A: heart problems B: high blood pressure C: memory loss D: all of the above
C - memory loss
33: For you to be able to run, ____ must relay messages from your central nervous system to your leg muscles A: interneurons B: agonist C: motor neurons D: sensory neurons
C - motor neurons
23: The corpus callosum is responsible for A: storing nutrients B: regulating body temperature C: moving information from one hemisphere of the brain to the other D: all of the above
C - moving information from one hemisphere of the brain to the other
41: In order to learn about the political attitudes of all students enrolled at the University of Tennessee, Professor Marlow randomly selected 800 of these students to complete a questionnaire. In this instance, all the students enrolled at the University of Tennessee are considered to be a(n) A: independent variable B: control C: population D: dependent variable
C - population
40: Why is replication important to science? A: it allows you to obtain a representative sample of cases to study B: the natural setting eliminates the artificial environment of a lab C: repeated research with similar results increases confidence in the reliability of findings D: researchers can test the impact of belief on behavior
C - repeated research with similar results increases confidence in the reliability of findings
29: The axon of a resting neuron has gates that do not allow positive sodium ions to pass through the cell membrane. What is this characteristic called? A: myelin sheath B: threshold C: selective permeability D: action potential
C - selective permeability
11: Psychologists suggest people try to combat insomnia by A: drinking coffee or another kind of stimulant B: trying harder to fall asleep C: using daydreams to relax D: taking sleeping pills
C - using daydreams to relax
39: The surgical removal of a large tumor from Dane's occipital lobe resulted in extensive loss of brain tissue, Dane is most likely to suffer some loss of A: muscular coordination B: language comprehension C: visual perception D: speaking ability
C - visual perception
48: Which brain area is primarily involved with controlling speech? A: sensory cortex B: angular gyrus C: hypothalamus D: Broca's Area
D - Broca's Area
15: Marijuana is an example of A: Hallucinogen B: Stimulant C: Depressant D: All of the Above
D - all of above
18: During a 24-hour day, people experience a sequence of changes in A: blood pressure B: sleepiness and wakefulness C: body temperature D: all of the above
D - all of above
7: Researchers learn about the brain by studying A: the effects of electrical stimulation on the brain B: images of the brain created by computers C: people with head injuries D: all of the above
D - all of above
16: The two main divisions of the central nervous system are the A: sympathetic and parasympathetic nervous system B: right and left hemispheres C: somatic and autonomic nervous system D: brain and spinal cord
D - brain and spinal chord
10: The largest part of the brain is the A: hypothalamus B: cerebellum C: thalamus D: cerebrum
D - cerebrum
37: A brain lesion refers to ___ of the brain tissue A: electrical stimulation B: x-ray photography C: radioactive bombardment D: destruction
D - destruction
1: Sleep is considered a necessary vital function because it A: helps people recover from stress B: maintains the brain's proper functioning C: builds up a person's resistance to infection D: does all of the above
D - does all of above
31: Jose has just played a long, bruising football game but feels little fatigue or discomfort. His lack pain is most likely caused by the release of A: glutamate B: dopamine C: acetylcholine D: endorphins
D - endorphins
25: A researcher interested in proving a causal relationship between two variables should choose which research method? A: correlation B: survey C: naturalistic observation D: experiment
D - experiment
9: For most people, the ability to create language originates in the A: thalamus B: right hemisphere C: hypothalamus D: left hemisphere
D - left hemisphere
42: To assess reactions to a proposed tuition hike at her college. Ariana sent questionnaire to every fifteenth person in the college registrar's alphabetical listing of all currently enrolled students. Ariana employed the technique of A: random assignment B: replication C: correlation D: random sampling
D - random sampling
30: Reuptake refers to the A: movement of neurotransmitter molecules across a synaptic gap B: release of hormones into the bloodstream C: inflow of positively charged ions through an axon membrane D: reabsorption of excess neurotransmitter molecules by a sending neuron
D - reabsorption of excess neurotransmitter molecules by a sending neuron
12: The main function of the peripheral nervous system is to A: speed up respiration and heart rate to increase alertness B: produce growth hormones C: relay messages between the brain's right and left hemispheres D: transmit information from the central nervous system to other parts of the body
D - transmit information from the central nervous system to other parts of the body
