Table 2.

Quality indicator assessment for group research designs

	Participants	IV	Com Con	DV	Link	Stat	RA	IOA	Blind Rater	Fidelity	Attrition	Gen/Main	ES	SV	Overall
Bearss et al. (2017)	H	H	U	H	H	H	N	N	N	E	E	N	E	E	Weak
Heitzman-Powell et al. (2014)	U	H	U	H	H	U	N	E	N	E	E	N	N	E	Weak
Ingersoll and Berger (2015)	U	H	H	H	H	H	E	N	N	N	N	N	N	E	Weak
Ingersoll et al. (2016)	U	H	H	H	H	H	E	E	N	E	N	E	N	E	Weak
Kuravackel et al. (2018)	U	H	H	H	H	H	E	N	N	N	N	N	E	E	Weak
Lindgren et al. (2015)	U	H	A	H	H	H	N	E	N	N	E	N	N	E	Weak
Vismara et al. (2016)	U	H	H	H	H	H	E	N	E	E	E	E	N	E	Weak
Vismara et al. (2009)	U	H	A	H	H	U	N	E	E	E	E	N	N	E	Weak

IV independent variable, RA random assignment, ES effect size, U unacceptable, E evidence of Com, Con comparison condition, IOA interobserver agreement, SV social validity, A acceptable, N no evidence of DV dependent variable, BR blind rater, H high, Stat statistical testing, Gen/Main generalisation/maintenance