Why should tests include items from a variety of difficulty levels?
a. Students are less likely to guess when there is a wide range of item difficulty.
b. Good tests encourage students to do their best and a range of difficulty helps less confident students.
c. Good tests discriminate at a variety of difficulty levels.
d. Students like to have some easy items because they are more likely to respond correctly by chance.
c
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_____ The main difference between primary circular reactions and secondary circular reactions is that primary circular reactions are limited to actions and outcomes involving one's own body, whereas secondary circular reactions can involve objects
in the external world. Indicate whether the statement is true or false
Vicki is taking her morning walk when a strange dog appears in her path and begins to growl at her
Vicki's heart begins to race, the hair on her arms stands on end, and her palms begin to sweat as fear envelops her. These symptoms that Vicki is experiencing are due to the reactions of which nervous system? a. sympathetic b. parasympathetic c. somatic d. central