Which one of the following is a characteristic of a good test item—one that should be retained in the final version of the test?
a. Low discrimination index
b. Item characteristic curves that have very little slope
c. Difficulty level of .5
d. Interitem correlation coefficient near zero
c. Difficulty level of .5
Psychology
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The second and third steps in lever-press training consist of delivering food
a. noncontingently and then contingent on a lever press. b. as part of habituation training and also after habituation has occurred. c. in the absence of orienting responses. d. in a way that makes the lever a US. e. so as to assure temporal contiguity while eliminating behavioral discrepancy.
Psychology
About 80% of in vitro fertilization attempts succeed
Indicate whether the statement is true or false
Psychology