Table 1.

Number of videos and their mean durations of stimulus parameters speech and gesture as well as their mean stimulus ratings of understandability, imageability, and naturalness according to the four conditions abstract-gesture (AG), concrete-gesture (CG), abstract-speech (AS), and concrete-speech (CS) for set 1, set 2 and in total.

Set	Condition	N	Stimulus parameter				Rating evaluations
			Speech duration		Gesture duration		Understandability		Imagebility		Naturalness
			Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD
1	AG	26	2.163	0.391	2.313	0.440	3.625	0.578	4.498	0.587	4.565	0.379
	CG	26	2.303	0.434	3.033	0.364	3.537	0.808	4.785	0.695	4.340	0.540
	AS	26	2.400	0.308			6.527	0.179	3.481	0.321	4.077	0.258
	CS	26	2.332	0.290			6.650	0.209	2.967	0.308	3.181	0.293
	Total	104	2.299	0.366	2.673	0.540	5.085	1.595	3.933	0.894	4.041	0.649
2	AG	26	2.144	0.296	2.219	0.336	3.392	0.766	4.381	0.698	4.479	0.501
	CG	26	2.160	0.391	2.989	0.415	3.327	0.660	4.598	0.621	4.181	0.444
	AS	26	2.332	0.281			6.490	0.154	3.454	0.372	3.935	0.237
	CS	26	2.274	0.229			6.652	0.155	3.083	0.207	3.181	0.279
	Total	104	2.228	0.311	2.604	0.539	4.965	1.693	3.879	0.810	3.944	0.612
Total	AG	52	2.153	0.343	2.266	0.390	3.509	0.682	4.439	0.641	4.522	0.442
	CG	52	2.231	0.415	3.011	0.387	3.432	0.738	4.691	0.659	4.261	0.496
	AS	52	2.366	0.294			6.509	0.166	3.467	0.344	4.006	0.256
	CS	52	2.303	0.260			6.651	0.182	3.025	0.266	3.181	0.283
	Total	208	2.263	0.340	2.639	0.538	5.025	1.642	3.906	0.851	3.992	0.631

SD, standard deviation.