1. Ackerman, P. L. (1988). Determinants of individual differences during skill acquisition: Cognitive abilities and information processing. Journal of Experimental Psychology: General, 117, 288–318.
2. Amunts, K., et al. (1997). Motor cortex and hand motor skills: Structural compliance in the human brain. Human Brain Mapping, 5(3), 206–215.
3. Berk, L. E. (2014). Development through the lifespan (6th ed.). Boston: Pearson. Allyn and Bacon.
4. Bosman, E. A. (1993). Age-related differences in the motoric aspects of transcription typing skill. Psychology and Aging, 8, 87–102.
5. Charness, N. (1981). Search in chess: Age and skill differences. Journal of Experimental Psychology: Human Perception and Performance, 7, 467–476.