Open Access Research Protocol The Development and Validation of the Successful Psychopathy Scale [Protocol] Louise Wallace, ¹ ,4 *, Oleg Medvedev, PhD 3,5 , Dean Fido, PhD² ,6 , Alexander L. Sumich, PhD¹ ,7 , Nadja Heym, PhD ¹,8 1 Nottingham Trent University, 50 Shakespeare Street, Nottingham, NG1 4FQ, UK 2 University of Derby, Kedleston Road, Derby, DE22 1GB, UK 3 University of Waikato, Hillcrest, Hamilton 3216, New Zealand 4 ORCiD: https://orcid.org/0000-0003-2706-4373 5 ORCiD: https://orcid.org/0000-0002-2167-5002 6 ORCiD: https://orcid.org/0000-0001-8454-3042 7 ORCiD: https://orcid.org/0000-0003-4333-8442 8 ORCiD: https://orcid.org/0000-0003-2414-8854 *Corresponding author: Louise Wallace, louise.wallace@ntu.ac.uk Abstract The personality construct known as ‘Successful Psychopathy’ has attracted the interests of researchers and clinicians alike. The concept suggests an individual who demonstrates the core traits associated with psychopathy but is able to adapt and function within society to prototypical or superior standards. There has yet to be a sound theoretical model of this construct by which to base a psychometric measure. This protocol presents the ethical procedure that will endeavour to create such a measure and validate it within general population samples. Keywords: Psychopathy, Successful Psychopathy, Scale Development Citation: Wallace, L., Medvedev, O., Fido, D., Sumich, A.L., Heym, N. (2021). The Development and Validation of the Successful Psychopathy Scale [Protocol]. Journal of Concurrent Disorders. Editor-in-Chief: Mona Nouroozifar Guest-editors: Dean Fido & Masood Zangeneh Associate editor: Greta Kaluzeviciute Received: 08/03/2021 Accepted: 09/29/2021 Published: 10/16/2021 Copyright: ©2021 Wallace, L., Medvedev, O., Fido, D., Sumich, A.L., Heym, N. Licensee CDS Press, Toronto, Canada. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons. org/licenses/by/4.0/)