Positive and negative item wording and its influence on the assessment of callous-unemotional traits
Psychological Assessment (2016) - Comment
pubmed: 26121386  doi: 10.1037/pas0000183  issn: 1939-134x  issn: 1040-3590 

James V. Ray, Paul J. Frick, Laura C. Thornton, Laurence Steinberg, Elizabeth Cauffman