For an item to have a discrimination index of +1.00, the item needs to have a difficulty of 50%. Why?
What will be an ideal response?
Ans: A d equal to +1.00 indicates that the item perfectly differentiated between the high and low group, meaning half will got the item correct and half did not, rendering a D equal to 50%.
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Prosocial behavior benefits others and demonstrates the presence of a(n) ____________________ conscience
Fill in the blank(s) with correct word
A major difference between online search engines and periodical indexes, such as ERIC is
a. a list of "hits" appears for a search. c. subject descriptors are searched. b. a "controlled vocabulary" is used. d. Both b and c.
Answer the following statement(s) true (T) or false (F)
1. If a person bounces back and forth between two moods his behavior can best be described using a point attractor 2. In the dynamical systems perspective, a mental representations is discrete and constant over time 3. In symbolic dynamics an attractor basin can be used to represent a letter or word 4. If functional neural units continually update their neighbors, then this corresponds to the component dominant view of neural dynamics 5. The externalist view is that the mind is the result of interactions between the brain, body and the immediate physical environment
In qualitative research, internal validity:
A. is irrelevant. B. is the same as instrument validity. C. represents systematically ruling out alternative explanations. D. has a completely different meaning.