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The Effects of the iPlayClean Education Programme on Doping Attitudes and Susceptibility to use Banned Substances among High-Level Adolescent Athletes from the UK: A Cluster-Randomised Control Trial (2020)
Journal Article
Nicholls, A., Morley, D., Thompson, M. A., Huang, C., Abt, G., Rothwell, M., …Ntoumanis, N. (in press). The Effects of the iPlayClean Education Programme on Doping Attitudes and Susceptibility to use Banned Substances among High-Level Adolescent Athletes from the UK: A Cluster-Randomised Control Trial. International Journal of Drug Policy,

Background: This study examined the effects of the iPlayClean anti-doping intervention on attitudes towards doping and susceptibility, and whether delivery mode affected the results. Methods: A total of 1,081 high-level UK athletes (14-18 years old... Read More about The Effects of the iPlayClean Education Programme on Doping Attitudes and Susceptibility to use Banned Substances among High-Level Adolescent Athletes from the UK: A Cluster-Randomised Control Trial.

Stress Appraisals Influence Athletic Performance and Psychophysiological Response during 16.1km Cycling Time Trials (2020)
Journal Article
Thompson, M. A., Toner, J., Perry, J. L., Burke, R., & Nicholls, A. (2020). Stress Appraisals Influence Athletic Performance and Psychophysiological Response during 16.1km Cycling Time Trials. Psychology of sport and exercise, 49(July), https://doi.org/10.1016/j.psychsport.2020.101682

Objectives: We examined how stress appraisals were associated with emotions, coping behaviours, as well as subjective and objective measures of performance. Design: Prospective field- and laboratory-based studies. Methods: In Study 1, 192 athletes... Read More about Stress Appraisals Influence Athletic Performance and Psychophysiological Response during 16.1km Cycling Time Trials.

The development and validation of the Adolescent Sport Drug Inventory (ASDI) among athletes from four continents (2019)
Journal Article
Nicholls, A. R., Levy, A. R., Meir, R., Sanctuary, C., Jones, L., Baghurst, T., …Perry, J. L. (in press). The development and validation of the Adolescent Sport Drug Inventory (ASDI) among athletes from four continents. Psychological assessment, https://doi.org/10.1037/pas0000750

A significant barrier to understanding the psycho-social antecedents of doping use among adolescent athletes is the lack of valid measures. In order to address this issue, the first aim of this paper was to develop and validate the Adolescent Sport D... Read More about The development and validation of the Adolescent Sport Drug Inventory (ASDI) among athletes from four continents.


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