Differential weighting promises to improve the validity of a measure. This study examines whether similar results would be found using weighted, unweighted and standardized z scores from the All Stars Core survey. It was concluded that the weighted systems were developed to equate the questions within the scales and to ease the process for customers without access to data analysis programs; however, the standardized scores were the more appropriate method for equating the test items.
Brown, Jennifer L.; Halpin, Gerald; and Halpin, Glennelle
"Weight: Does It Really Matter?,"
Journal of Modern Applied Statistical Methods:
1, Article 18.
Available at: http://digitalcommons.wayne.edu/jmasm/vol11/iss1/18