Int. J. Work Organisation and Emotion, Vol. 7, No. 4, 2016 257 Copyright © 2016 Inderscience Enterprises Ltd. Does mindfulness enhance stock trading performance?: the moderating and mediating effects of impulse control difficulties Peerayuth Charoensukmongkol* and Vesarach Aumeboonsuke International College, National Institute of Development Administration, 118 Moo 3, Sereethai Road, Klong-Chan, Bangkapi, Bangkok 10240, Thailand Email: peerayuth.c@nida.ac.th Email: vesarach@gmail.com *Corresponding author Abstract: This research investigates the contribution of mindfulness on performance of stock traders. The authors focus on the role of mindfulness in helping individuals lower impulsive behaviours when they trade stocks. Survey data were collected from 120 independent traders and 73 professional traders in Thailand (total N = 193). The analysis from partial least squares regression found that impulse control difficulties mediated the link between mindfulness and stock trading performance. This suggested that individuals with higher mindfulness measure tended to experience lower impulse control difficulties problem, and subsequently exhibited better stock trading performance. However, the analysis of the moderating effect revealed that the positive contribution of mindfulness on stock trading performance is only present for those with high impulse control difficulties. Surprisingly, mindfulness appeared to lower trading performance of traders who did not have impulse control difficulties. Keywords: mindfulness; emotion control; impulsive behaviour; decision making; partial least squares regression; stock trading; stock traders. Reference to this paper should be made as follows: Charoensukmongkol, P. and Aumeboonsuke, V. (2016) ‘Does mindfulness enhance stock trading performance?: the moderating and mediating effects of impulse control difficulties’, Int. J. Work Organisation and Emotion, Vol. 7, No. 4, pp.257–274. Biographical notes: Peerayuth Charoensukmongkol is a Lecturer at the International College of the National Institute of Development Administration. He received his PhD in International Business from the Texas A&M International University. His research interests are broadly in the areas of cross-cultural management, organisational behaviour, managerial psychology, and strategic management. Vesarach Aumeboonsuke is an Assistant Professor in Finance at the International College of the National Institute of Development Administration. Her research interests are in the area of finance, risk management, credit risk modelling, and R programming.