Ivan conducted a reliability study for a test of computer skills. His results were a coefficient alpha of .95 and a test-retest r of .85 (four weeks). Interpret these results including explaining why the reliability coefficients might have been different.
What will be an ideal response?
• Both the coefficient alpha and the test-retest coefficient indicate that the test was a reliable measure of computer skills. If the same test were given a second time to the same people, the results would be similar.
• The coefficients were different because alpha and test-retest coefficients measure different things. Alpha is an indicator of how internally consistent the test scores were. Test-retest measures the stability of test scores over time.
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Pedro has the most common form of dissociative amnesia. He was a witness to his father's murder but has no memory of the event. This illustrates ____
a. depersonalization c. localized amnesia b. fugue d. generalized amnesia
The limbic system ______.
A. is exclusively involved in emotions, which is why it is called the "emotional brain" B. is a network of structures located in the cortical regions of the frontal lobe C. is involved in emotions, along with structures at many other levels of the brain D. can be easily studied in humans because it is a relatively simple system
Patient S.M.'s amygdalae were damaged because of a rare genetic disorder. While walking home one day, someone attempts to threaten her and steal her purse. Given the loss of her amygdalae, how is she likely to respond?
A. She will be afraid but unable to run away. B. She will throw her purse at them and run away. C. She will fight back despite any danger. D. She will perceive it as an attempt to be friendly.
Describe two features that function to protect the brain from external injury
What will be an ideal response?