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. Author manuscript; available in PMC: 2015 Dec 1.
Published in final edited form as: J Autism Dev Disord. 2014 Dec;44(12):3230–3244. doi: 10.1007/s10803-014-2180-0

Table 3.

Factor Structure of the OSEL Syntax Items

Factor Loadings
EFA
Articles 0.83
Regular Plurals 0.75
Irregular Plurals 0.52
Regular Past Verbs 0.79
Irregular Past Verbs 0.9
Progressive Tense Verbs 0.72
Future Tense Verbs 0.9
Copula Verbs 0.82
Modal Auxiliary Verbs 0.87
Infinitive Phrases 0.85
Negation 0.85
Prepositions 0.66
Longest Sentence (number of words) 0.95
Subjective Pronouns 0.89
Objective Pronouns 0.77
Possessive Pronouns 0.76
Subordination 0.9
Coordination 0.93
Adjectives 0.78
Nouns 0.8
Verbs 0.94
Responses to WH- questions 0.55
Responses to Y/N questions 0.67
Questions 0.66

CFI
0.99

RMSEA
0.057

Note. EFA Exploratory Factor Analysis, CFI Comparative Fit Index, RMSEA Root Mean Square Error Approximation.