Table 3.

Study controls.

Study	Subject population	Control for IQ	Control for SES	Type of assignment	Control interventions
Bolduc and Lefebvre, 2012	Typical	Yes	SES not reported	Random assignment by class	Phonological control
Cogo-Moreira et al., 2013	Atypical	Yes	SES not reported	Random assignment by school	No-treatment control
Degé and Schwarzer, 2011	Typical	Yes	Yes	Student random	Non-auditory control (sports)
Gromko, 2005	Typical	IQ not reported	No	Non-random assignment by school	No-treatment control
Herrera et al., 2011, Spanish	Typical	Yes	SES not reported	Student random	Phonological control
Herrera et al., 2011, Tamazight	Typical	Yes	SES not reported	Student random	Phonological control
Moreno et al., 2009	Typical	Yes	Yes	Student random	Non-auditory control (art)
Moreno et al., 2011	Typical	Yes	Yes	Student random	Non-auditory control (art)
Moritz et al., 2013	Typical	Yes	No	Non-random assignment by school	Less intensive music control
Myant et al., 2008	Typical	IQ not reported	Yes	Non-random assignment by school	No-treatment control
Register, 2004	Typical	IQ not reported	Yes	Non-random assignment by class	No-treatment control
Thomson et al., 2013	Atypical	Yes	SES not reported	Student random	No-treatment control
Yazejian and Peisner-Feinberg, 2009	Typical	IQ not reported	Yes	Random assignment by class	No-treatment control

This table reports population, IQ, SES, type of assignment, and control interventions for each study.