Table 2.

Studies, included in meta-analysis.

ID	Study	Comments
Kornicke, 1992	Kornicke, L. E. (1992). An exploratory study of individual difference variables in piano sight-reading achievement (Doctoral Dissertation, Indiana University, Ann Arbor, USA). Available from ProQuest Dissertations and Theses database. (UMI No. 9301458).
Ericsson et al., 1993—Study II	Ericsson, K. A., Krampe, R. T., and Tesch-Römer, C. (1993). The role of deliberate practice in the acquisition of expert performance. Psychological Review 100, 363–406.	Two studies reported; only data of study II was considered.
Lehmann and Ericsson, 1996	Lehmann, A. C., and Ericsson, K. A. (1996). Performance without preparation: structure and acquisition of expert sight-reading and accompanying performance. Psychomusicology 15, 1–29.
Krampe and Ericsson, 1996—Study I	Krampe, R. T., and Ericsson, K. A. (1996). Maintaining excellence: deliberate practice and elite performance in young and older pianists. Journal of Experimental Psychology: General 125, 331–359.	Two studies reported; only data of study I was considered.
Hallam, 1998	Hallam, S. (1998). The predictors of achievement and dropout in instrumental tuition. Psychology of Music 26, 116–132.
Meinz, 2000	Meinz, E. J. (2000). Experience-based attenuation of age-related differences in music cognition tasks. Psychology and Aging 15, 297–312.
Tuffiash, 2002	Tuffiash, M. (2002). Predicting individual differences in piano sight-reading skill: practice, performance, and instruction. Unpublished master's thesis, Florida State University, Tallahassee, FL.
McPherson, 2005	McPherson, G. E. (2005). From child to musician: skill development during the beginning stages of learning an instrument. Psychology of Music 33, 5–35.	Author contacted for data.
Jabusch et al., 2007	Jabusch, H.-C., Yong, R., and Altenmüller, E. (22–23 Nov. 2007). Biographical predictors of music-related motor skills in children pianists. Paper presented at the International Symposium on Performance Science, Porto.
Kopiez and Lee, 2008	Kopiez, R., and Lee, J. I. (2008). Towards a general model of skills involved in sight reading music. Music Education Research 10, 41–62.
Jabusch et al., 2009	Jabusch, H. C., Alpers, H., Kopiez, R., Vauth, H., and Altenmüller, E. (2009). The influence of practice on the development of motor skills in pianists: a longitudinal study in a selected motor task. Human Movement Science 28, 74–84.
Meinz and Hambrick, 2010	Meinz, E. J., and Hambrick, D. Z. (2010). Deliberate practice is necessary but not sufficient to explain individual differences in piano sight-reading skill: the role of working memory capacity. Psychological Science 21, 914–919.
Kopiez et al., 2012—Study II	Kopiez, R., Jabusch, H.-C., Galley, N., Homann, J.-C., Lehmann, A. C., and Altenmüller, E. (2012). No disadvantage for left-handed musicians: the relationship between handedness, perceived constraints and performance-related skills in string players and pianists. Psychology of Music 40, 357–384.	Two studies reported; only data of study II was considered.