Table 2.

Means and standard deviations of eye movement indicators for learners with different cognitive styles

		Measurement index	With or without bullet screens	Field-independent		Field-dependent
				M	SD	M	SD
Bullet screen area	Fixation indicators	Total fixation time (ms)	Bullet-screen-free group	4015	2858	3261	1127
			Bullet-screen group	15,164	9614	18,765	13,819
		Average fixation time (ms)	Bullet-screen-free group	229	61	210	45
			Bullet-screen group	227	50	226	26
		Fixation count	Bullet-screen-free group	19	15	16	6
			Bullet-screen group	70	47	81	58
	Saccade indicators	Average regression count	Bullet-screen-free group	11	8	10	4
			Bullet-screen group	28	18	29	20
Learning area	Fixation indicators	Total fixation time (ms)	Bullet-screen-free group	204,552	26,758	195,351	33,477
			Bullet-screen group	192,301	27,115	200,324	23,859
		Average fixation time (ms)	Bullet-screen-free group	279	56	248	42
			Bullet-screen group	279	59	348	126
		Fixation count	Bullet-screen-free group	746	74	790	87
			Bullet-screen group	709	129	627	171
	Saccade indicators	Average regression count	Bullet-screen-free group	54	31	64	24
			Bullet-screen group	67	35	72	48

Note: The video images were divided into bullet-screen area and learning area, and the fixation and saccade eye movement indicators of field-independent and field-dependent learners were collected respectively. The fixation indicators include total fixation time, average fixation time and fixation count, and the saccade indicators include average regression count