Exploring the Effectiveness of Native and Non-Native English Teachers on EFL Learners’ Accuracy, Fluency, and Complexity in Speaking

Table 4

Results of paired-sample t-test for accuracy, fluency, and lexical complexity of the students taught by the non-native teacher.

	N	M	Standard deviation	Standard error mean	t	df	Sig.
Accuracy pretest–accuracy posttest	15	83.66	7.90	7.65	3.726	14	0.002
		90.93	5.77	4.04
Fluency pretest–fluency posttest	15	82.86	9.81	2.53	2.900	14	0.012
		73.33	7.22	1.86
Lexical complexity pretest–lexical complexity posttest	15	71.93	9.83	2.54	1.183	14	0.257
		75.33	10.25	2.64