Psychometrics L9: Differential Item Functioning

DIF

DIF

DDF

<p>Item Response Theory</p> Signup and view all the answers

<p>Scholastic Assessment Test</p> Signup and view all the answers

<p>Detecting differences in probability of question correctness between social groups</p> Signup and view all the answers

<p>DDF involves differences in item wording, while DIF focuses on group-based response variations</p> Signup and view all the answers

<p>Consistent differences in probability of question correctness across all items</p> Signup and view all the answers

<p>An approach to detecting differences in option selection probabilities between social groups</p> Signup and view all the answers

<p>Measuring differences in option selection probabilities due to item wording</p> Signup and view all the answers

<p>DIF occurs when two subjects with the same underlying ability but from different groups have different probability to answer question correctly</p> Signup and view all the answers

<p>DDF refers to the difference in the probability of option selection due to different distractors, while DIF occurs when two subjects with the same underlying ability but from different groups have different probability to answer question correctly</p> Signup and view all the answers

<p>Difference in the probability of option selection due to different distractors</p> Signup and view all the answers

<p>Uniform variation refers to constant differences in item difficulty across different groups of subjects</p> Signup and view all the answers

<p>DIF focuses on variation in item difficulty across different groups, while DDF focuses on differences in the probability of selecting an option by respondents from different social groups</p> Signup and view all the answers