Lucy (Skillet song) couple struggling with feelings of regret after an abortion. He retold this story and further explained his intent in writing the song in an Air 1 interview posted on Skillet's official website: Skillet - Lucy Story Behind The Song. Lucy (Skillet song) "Lucy" is the fifth single of the 2009 album "Awake" by the Christian rock band Skillet, and is the twelfth and final track on the album. John Cooper initially refrained from discussing the song's full meaning, stating that it has "a gist of regret where you wish you had done things differently" and "even though there's a specific
Differential item functioning Differential item functioning Differential item functioning (DIF) is a statistical characteristic of an item that shows the extent to which the item might be measuring different abilities for members of separate subgroups. Average item scores for subgroups having the same overall score on the test are compared to determine whether the item is measuring in essentially the same way for all subgroups. The presence of DIF requires review and judgment, and it does not necessarily indicate the presence of bias. DIF analysis provides an indication of unexpected behavior of items on a test. An item does not display DIF if