Table 6.

Relative production of the four most prevalent clause constructions by genre

Genre	Syntactic structure	df	F	p	Grade (cohort)	M (SD)
Essays		1,107	93.67	0.001
	Single				2 (1)	1.04 (1.19)
	Independent clause				4 (2)	1.72 (1.74)
	Independent plus				2 (1)	0.35 (0.49)
	Relative clause				4 (2)	1.55 (1.69)
	Independent plus				2 (1)	0.04 (0.21)
	Complement				4 (2)	0.14 (0.42)
	Clause
	Independent plus				2 (1)	0.09 (0.29)
	Subordinate clause				4 (2)	0.43 (0.69)
Essays		1,108	92.85	0.001
	Single				4 (1)	2.10 (2.14)
	Independent clause				6 (2)	2.52 (2.25)
	Independent plus				4 (1)	1.28 (1.38)
	Relative clause				6 (2)	1.81 (1.58)
	Independent plus				4 (1)	0.24 (0.64)
	Complement				6 (2)	0.30 (0.69)
	Clause
	Independent plus				4 (1)	0.52 (0.83)
	Subordinate				6 (2)	0.68 (0.96)
	Clause
Narratives		1,105	15.62	0.001
	Single				3 (1)	1.72 (1.88)
	Independent				5 (2)	1.81 (1.87)
	Clause
	Independent plus				3 (1)	0.12 (0.40)
	Relative clause				5 (2)	0.27 (0.61)
	independent plus				3 (1)	0.31 (0.60)
	Complement				5 (2)	0.66 (1.02)
	Clause
	Independent plus				3 (1)	0.45 (0.68)
	Subordinate				5 (2)	0.81 (1.11)
	Clause
		1,99	21.22	0.001
	Single				3 (1)	1.82 (1.97)
	Independent				5 (2)	2.10 (1.97)
	Clause
	Independent plus				3 (1)	0.19 (0.53)
	Relative clause				5 (2)	0.42 (0.67)
	Independent plus				3 (1)	0.49 (0.71)
	Complement clause				5 (2)	0.89 (1.08)
	Independent plus				3 (1)	0.78 (0.98)
	Subordinate clause				5 (2)	1.03 (1.03)