Table 2.

Summary of results for untrained tasks.

	Simple		Complex
	Test	Results	Test	Results
Auditory training 1: Ferguson et al. (2014) (n = 44)
Speech perception	Digit Triplet Test in steady speech-shaped noise1	NS within group for IT or DT (p > 0.05)	N/T	N/A
	Adaptive Sentence List in 8-Hz modulated noise2	NS within group effect for IT or DT (p > 0.05)	N/T	N/A
Cognition	Digit Span3	NS within group for IT or DT (p > 0.05)	Visual letter monitoring4 1/s (fast) updating	All trained: p = 0.003, d = 0.50 DT control: NS (p > 0.05)
	Test of Everyday Attention5 – single attention task	NS within group for IT or DT (p> 0.05)	Test of Everyday Attention – dual task decrement	All trained: p = 0.001, d = 0.53 DT control: NS (p > 0.05)
Communication	Glasgow Hearing Aid Benefit Profile6: Television set to set to level for others 1:1 conversation in no background noise Conversation in a busy street or shop	NS within group for IT or DT (p > 0.05)	Glasgow Hearing Aid Benefit Profile: Having a conversation with several people in a group	All trained: p = 0.005, d = 0.68 DT control: NS (p> 0.05)
Auditory training 2: Henshaw and Ferguson (2014) (n = 30)
Speech perception	N/A	N/A	Competing speech7	Trained period: p = 0.03, d = 0.47 Control period: NS (p > 0.05)
			Dual task of speech and memory8	Trained period: p = 0.001, d = 0.77 Control period: NS (p > 0.05)

IT, immediate trained; DT, delayed Trained; NS, no significant effect; N/T, not tested; N/A, not applicable. ¹Smits et al. (2004), ²Millward et al. (2011),³Wechsler (1997), ⁴Gatehouse et al. (2003), ⁵Robertson et al. (1996), ⁶Gatehouse (1999), ⁷Hazan et al. (2009), ⁸Howard et al. (2010).