TABLE 4.

Two-way analyses of variance for participant type, other demographics, and perception.

Variable	MS	F	p	η2
Communication skills
Gender	5.70	0.34	0.56	0.002
Years supporting children with ASD	138.23	9.57	0.003**	0.07
Years supporting children with PECS	21.15	1.27	0.26	0.009
Institution	3.48	0.21	0.81	0.003
Gender of child	4.63	0.28	0.60	0.002
Age of child	5.03	0.30	0.74	0.004
Age child started using PECS	63.42	3.90	0.05*	0.03
Frequency using PECS	4.01	0.24	0.63	0.002
Learning skills
Gender	0.24	0.02	0.90	0.001
Years supporting children with ASD	149.08	11.74	0.001**	0.09
Years supporting children with PECS	10.19	0.71	0.40	0.005
Institution	7.78	0.54	0.58	0.008
Gender of child	0.80	0.06	0.82	0.001
Age of child	0.86	0.06	0.94	0.001
Age child started using PECS	32.27	2.27	0.13	0.02
Frequency using PECS	0.98	0.07	0.79	0.001
Social interaction skills
Gender	0.25	0.01	0.92	0.001
Years supporting children with ASD	135.06	6.93	0.01**	0.05
Years supporting children with PECS	1.11	0.05	0.83	0.001
Institution	8.09	0.37	0.69	0.005
Gender of child	20.00	0.90	0.34	0.006
Age of child	18.50	0.82	0.44	0.01
Age child started using PECS	100.49	4.59	0.03*	0.03
Frequency using PECS	30.56	1.38	0.24	0.01
Total PTPECS
Gender	46.30	0.37	0.55	0.003
Years supporting children with ASD	1264.53	11.75	0.001**	0.09
Years supporting children with PECS	29.69	0.23	0.63	0.002
Institution	17.39	0.14	0.71	0.001
Gender of child	45.95	0.36	0.70	0.005
Age of child	45.95	0.36	0.70	0.005
Age child started using PECS	569.17	4.60	0.03*	0.03
Frequency using PECS	112.65	0.90	0.34	0.007

*p < 0.05; **p < 0.01; ASD, Autism Spectrum Disorder; PECS, Picture Exchange Communication System; PTPECS, Perception toward Picture Exchange Communication Scale.