Table 9.

Constraints in Constraint-Based Models: Mean Frequencies of Occurrence and Interquartile Ranges

	Sentence source
Constraints	Trueswell et al. (1994)	Corpus, Set 1	Corpus, Set 2	MacDonald (1994)	McRae et al. (1998)
Argument roles
Agent–patient	.53 (.20)	.59 (.20)	.39 (.41)	.54 (.32)	.50 (.22)
Agent	.04 (.05)	.04 (.05)	.01 (.01)	.09 (.07)	.06 (.06)
Patient	.43 (.31)	.37 (.28)	.60 (.41)	.37 (.32)	.44 (.33)
Transitivity
Transitive	.96 (.05)	.96 (.05)	.99 (.01)	.91 (.07)	.94 (.05)
Intransitive	.04	.04	.01	.09	.06
Voice
Active	.49 (.32)	.51 (.26)	.31 (.28)	.53 (.33)	.45 (.34)
Passive	.51	.49	.69	.47	.55
Tense
Past	.38 (.25)	.39 (.27)	.23 (.19)	.40 (.26)	.35 (.31)
Participle	.62	.61	.77	.60	.65
Typicality
Agent = animate	.77 (.20)	.58 (.45)	.59 (.33)	.69 (.28)	.74 (.24)
Patient = animate	.17 (.21)	.35 (.44)	.42 (.26)	.27 (.38)	.66 (.70)
Syntactic structure
Main clause	.92 (.05)	.92 (.04)	.84 (.11)	.94 (.05)	.93 (.05)
Reduced relative	.06 (.04)	.05 (.04)	.13 (.08)	.04 (.05)	.05 (.04)
Nonreduced relative	.02 (.01)	.01 (.01)	.03 (.04)	.02 (.01)	.02 (.02)

Note. Values in parentheses represent the interquartile ranges of the probability values.