Table 1.

Studies on mixed reality systems.

Author	Year	Country	Clinical Group	Control Group	Age	Diagnosis	Area	Method	Results	Classification
Ke et al. [34]	2013	USA	4 Children	-	4–5	High-functioning ASD	Social interaction	Virtual-Reality + Persons	Communication and interaction during intervention increment	Social learning and skills imitation
Brigadoon [35]	2006		-	-	-	-	Social interaction	Virtual-Reality	Brigadoon. Pilot online community	Communication and interaction
Parsons et al. [36]	2006	UK	2 adolescents	-	-	ASD	Social Communication	Virtual environments, café and bus	Adolescent interpreted the scenes and responded correctly	Communication and interaction
Mitchell et al. [37]	2007	UK	6 teenagers	-	-	ASD	Communication	Virtual environments, cafe	Improvement related to time spent when they were making decisions	Communication and interaction
Stickland et al. [38]	2013	USA	22 teenagers	-	16–19	High-functioning ASD	Job interview skills	Virtual-reality, videos, Theory of Mind guides	Improvement on verbal skills	Communication and interaction
Josman et al. [39]	2008	Israel	6 children	6 children	-	ASD	Social skill: Cross the street	Virtual environment	Learning the skills needed to make right decisions	Social learning and imitation skills
Herrera et al. [40]	2008	Spain	2 children	-	8:6	ASD	Play skills	Virtual environment	Play skills improvement	Social learning and imitation skills
Fabri et al. [41]	2007	UK	34 young people	-	7–16	18 Asperger and 16 with severe autism	Social skills	Virtual avatars	88.3% of participants understood the emotions of avatars	Social learning and imitation skills
Ehrlich et al. [42]	2009	USA	Adolescents	-	-	ASD	Social skills	AVISS virtual environments, school, gymnasium	Participants did not respond well to the virtual avatar	Social learning and imitation skills
Finkelstein et al. [43]	2010	USA	-	8 people	4 (11–16 years) 2 (18–25 years) 2 (40–50 years)	Neuro-typical	Physical exercise	Astrojumper: a virtual reality game, dodge objects	Pilot study which works on physical exercise	Other conditions
Herrara et al. [44]	2012	Spain	-	-	-	-	Motor skills	Kinect and educational games	Pilot study which made children more aware of their own bodies	Other conditions
Fornasari et al. [45]	2013	Italy	16 children	16 children	-	ASD	Behavior	Urban virtual environments (1-free exploration 2-defined objects)	1° task: children with ASD took less time to explore environment than control group. 2° task: no behaviour differences	Other conditions