Card Set Information
writing and evaluating a test
6 rules for writing items
-define clearly what you want to measure
-generate an item pool
-keep level of reading appropriate for the person
-avoid double-barreled questions
-mix positively and negatively worded items
-avoid exceptionally long items
which tests were more prone for obsolete?
vocational interest or aptitude batteries
item formats- dichotomous format
items that require a yes-no, true-false response
item formats- dichotomous format- which two tests are in this format?
MMPI and MMPI-2
item formats-dichotomous format- what is one downfall ?
one can get half of them right with just by guessing
item formats-what are polychotomous format?
responses have more than 2 alternatives
*classic multiple choice question
item formats-polychotomous format- waht are distractors?
the incorrect items
*only if its a achievement or aptitude test
item formats-polychotomous format- how many distractors should there be?
no more than 3 or 4
*studies have shown
item formats-polychotomous format- how tough should the distractors be>
they have to be just right
item formats-likert format- what is a likert scale?
it is a scale that has any number of choice points on a graduated scale
item formats-likert format- is likert data interval or ordinal?
some argue it is ordinal
item formats-likert format- what point discriminations is optimal?
item formats-what is category format?
similar to likert scales, but more than 5-7 items
ex) on scale of 1-10
ex) when a group is being rated the ratters tend to use ratings of up to 10
*for most tasks, 10 is enough points to discriminate
(item formats)(category format) What is a visual analog scale?
is one in which a 100-millimeter line is used and the subject can draw a slash across it at whatever point they want