Teachers teaching misconceptions: a study of factors contributing to high school biology students’ acquisition of biological evolution-related misconceptions

Table 8 Summary of independent-samples t -test analyses for mean difference in pre- to post-instruction student variables related to teachers’ BEL-mean index score ranking

	Mean difference in student variable pre- to post-instruction(SD)
Student variable	Teacher HISG	Teacher LISG	t	df	p
Student variable	(n = 290)	(n = 246)	t	df	p
BEL-mean index score	+2.58	+0.47	2.75	534	<.01^a
BEL-mean index score	(9.25)	(8.40)
Misconception number	+0.20	+0.82	2.11	534	.04^b
Misconception number	(3.48)	(3.23)

^aDifference between groups is statistically significant at p < .01. ^bDifference between groups is statistically significant at p < .05. BEL, Biological Evolution Literacy; HISG, high index score group; LISG, low index score group, SD, standard deviation.

ISSN: 1936-6434