units one to three
Which of the following is true of the *frequency distributions* shown in the graphs above?
*Distribution B* has *more variation* than distributions *A or C.*
*Dr. Frishkoff* could accurately describe the results of her study by saying that participants
*showed a negative-going peak in brain wave activity* approximately 400 milliseconds after the unexpected word was presented that the participants did not show in response to the expected word
Which of the following values best represents the value of the statistic associated with the graph?
0.00
In data set A, the mean is
11
Which of the following is the range of Rachel's scores?
15
A psychologist administered the most recent edition of the Stanford-Binet IQ test to 50 students and their scores are shown in the chart above. How many students earned scores *higher than two* standard deviations above the mean?
2
In data set B, the range is
4
A student who scored at the mode would have how many points?
5
Which of the following is the median score?
6
Which of the following is the median of Rachel's scores?
9.5
Based on the graph, which of the following would most likely be used to assess the relation between the participants' scores on the two tests?
A correlation
A professor conducts a survey examining the relationship between pessimism and mental-health problems, and the results of her study are depicted in the scatterplot above. Which of the following types of relationship between *pessimism and mental-health problems* do her data suggest?
A positive correlation
What type of graph would a researcher use to represent these data?
A scatterplot
In the figure above, what letter corresponds to the light-sensitive surface of the eye that contains photoreceptors?
D
*Professor Janeja* is studying which brain regions are involved in learning to correctly navigate a maze task. She randomly assigns half of a group of mice to get a lesion in one area of the brain. The other half does not get a lesion. Based on the following graph, where in the brain is the most likely site of the lesion?
The hippocampus
In the figure above, what letter corresponds to the nerve that carries neural impulses from the eye to the brain?
E
In the figure above, where does the *neurotransmitter dopamine* have its effect?
E
Which of the following structures is *part of the vestibular system*?
B
Which monocular depth cue is illustrated in the figure above?
Linear perspective
Which of the following best describes the graph above?
Negatively skewed distribution
Which of the following brain regions is *indicated by the arrow*?
Pons
In the figure above, a patient has been asked to draw a slash through each circle. The pattern of responses suggests that the patient has most likely *experienced damage* in which of the following areas?
Right hemisphere
Which of the following is true of the two sets of scores above?
Set B has a larger standard deviation.
Using the data in sets A and B, which of the following statements is true?
Set B has a smaller standard deviation than set A.
*Carlos* sees the figure above as six unified columns, not four unified rows. Which of the following Gestalt principles is operating most strongly?
Similarity
What is the primary function of the *brain region indicated by the arrow*?
Sleeping, waking, and dreaming
Which part of the brain represented above is *indicated by A*?
Somatosensory cortex
Which of the following is the independent variable in this experiment?
The medicine
Which of the following statements is supported by the results of this experiment?
The medicine was more effective in reducing the severity of the headaches than was quiet rest.
Which of the following is a valid conclusion that the researchers could have drawn from the data?
The new test produces scores that are generally unrelated to those produced by the original test.
The reversible figure above illustrates the Gestalt organizing principle of
figure-ground
The area *labeled A* contains the
ossicles
Which of the following statistics best approximates the relation between the variables?
r = -.90
Based on the scores on the three tasks, *Task 3 most* likely involves
remembering events that occurred *shortly before his accident*
*Luz*, a math major, sees the drawing above as a Venn diagram. Her brother, an art major, sees it as two circles. The difference in perception is an example of
top-down processing
In the figure above, where do selective *serotonin reuptake inhibitors* (SSRIs) have their initial effect?
C
Which letter indicates the postsynaptic membrane?
C
Which of the following is an example of a *strong negative correlation*?
C
When Rocco views the image above, he sees it as a 13 when it is part of a larger number but as a B when it is part of a word. Rocco's response shows the importance of what perceptual concept?
Context effects
Which letter indicates the synaptic cleft?
D
Which of the following scattergrams represents the data above?
D
A research group conducted a study investigating the connection between self-reported number of *hours slept* in a given week and scores on a *happiness measure*. Based on the scatterplot above, the group can report that there is
a positive correlation
