Table 2.

Recommendations for Improving Future Training Studies

Limitations	Recommendations
• Limited empirical support for different training approaches	• Greater focus on identifying limits and active ingredients of training approaches
• Methodological weaknesses (e.g., small sample size, inadequate controls)	• More randomized controlled trials and studies in larger samples
• Limited study of the effects of training in social cognitive abilities (e.g., theory of mind)	• Further study of effects of training in social cognition • Greater emphasis on sustainability of training-related improvements and transfer of learning to other functions
• Limited attention to generalizability and sustainability of training-related improvements	• Further study of neural and genetic factors that may influence recovery of function following brain injury