Collide (Skillet album) said that 'Savior' is a song written mostly about his childhood. Although he was not physically abused by his father, he had a very destructive emotional relationship with him. Credits taken from the CD liner notes. Skillet Technical Collide (Skillet album) Collide is the fifth full-length album by Christian rock band Skillet. It was originally released on November 18, 2003 under Ardent Records. The album was re-released through Lava Records on May 25, 2004 with the bonus track "Open Wounds". The album peaked at No. 179 on the "Billboard" 200 and No. 5 on the Top Heatseekers. The album artwork
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