A researcher wishes to establish the DI (Discrimination Index) for a
series of five items contained in a new test being developed to assess Whole
Language Readiness (WLR).
The data are as follows:
Item Proportion Correct Proportion Correct
For Top Third For Bottom Third
a. .70 .60
b. .70 .50
c. .50 .20
d. .95 .70
e. .45 .50
a DI=.100
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A patient has just undergone a complete examination of the brain using the most sophisticated imaging tools available. The neurosurgeon found a tumor in the frontal lobe. Which of the following is most likely to be affected by this tumor?
a. sleep b. biological urges c. reasoning and planning d. hearing and vision
It has been widely accepted that that many phobias begin as a(n)
a. spontaneous recovery. b. operant reinforcer. c. response chain. d. conditioned emotional response.
In DeLoache's study on the use of a room-scale model, younger children (age two and a half years) did poorly because
a. their memory was bad, and they forgot where the toy was. b. they did not initially notice where the toy was hidden. c. strangers distracted them during the task. d. they did not understand that the model was a symbolic representation of the large room.
____ is a treatment for depression that electrically induces a seizure.
A. Electromagnetic therapy B. Repetitive transcranial magnetic stimulation C. Electroconvulsive shock therapy D. Transcranial magnetic stimulation