Construct validity of the Comprehensive Developmental Inventory for Infants and Toddlers.
BACKGROUND
The aim of this study was to investigate the construct validity of the diagnostic test, the Comprehensive Developmental Inventory for Infants and Toddlers (CDIIT).


METHODS
A total of 1085 children in four age groups (infant, 1-year-old, 2-year-old, preschool age) were enrolled. The Developmental Quotient of each subdomain of the five CDIIT subtests (Cognition, Language, Motor, Social, and Self-help) was used as the basic unit for factor analysis with the iterative principle factor method and promax rotation.


RESULTS
The two-factor solution in two younger age groups and 2- or 3-factor solutions in the 2-year-old and preschool groups provided superior factor structure in terms of interpretability and compatibility with existing child development theories.


CONCLUSIONS
Although five constructs were proposed in the original manual of CDIIT, two to three constructs were revealed in this empirical study.
Hwang
Ai-Wen
AW
Graduate Institute of Early Intervention, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan.
Weng
Li-Jen
LJ
Liao
Hua-Fang
HF
D000203:Activities of Daily Living; D002657:Child Development; D002675:Child, Preschool; D003071:Cognition; D002658:Developmental Disabilities / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007223:Infant; D018730:Infant Behavior; D007804:Language Development; D008297:Male; D011597:Psychomotor Performance