Stairs, A. ., Smith, G. ., Zapolski, T. ., Combs, J. ., & Settles, R. . (2012). Clarifying the construct of perfectionism. Assessment, 19(2), 146-66. https://doi.org/10.1177/1073191111411663

Zapolski, T. ., Settles, R. ., Cyders, M. ., & Smith, G. . (1969). Borderline Personality Disorder, Bulimia Nervosa, Antisocial Personality Disorder, ADHD, Substance Use: Common Threads, Common Treatment Needs, and the Nature of Impulsivity. Independent Practitioner (Lutterworth, England), 30(1), 20-23. (Original work published 1969)

Settles, R. ., Fischer, S. ., Cyders, M. ., Combs, J. ., Gunn, R. ., & Smith, G. . (2012). Negative urgency: a personality predictor of externalizing behavior characterized by neuroticism, low conscientiousness, and disagreeableness. Journal of Abnormal Psychology, 121(1), 160-72. https://doi.org/10.1037/a0024948

Settles, R. ., Zapolski, T. ., & Smith, G. . (2014). Longitudinal test of a developmental model of the transition to early drinking. Journal of Abnormal Psychology, 123(1), 141-51. https://doi.org/10.1037/a0035670

Settles, R. ., & Smith, G. . Toward a Developmentally Centered Approach to Adolescent Alcohol and Substance Use Treatment. Current Drug Abuse Reviews, 8(2), 134-51. https://doi.org/10.2174/1874473708666150916114118 (Original work published 2015)