Table 4.

Results of correlation analysis of K-DST 1st edition, K-BSID-II, and K-WPPSI

Variable	Gross motor	Fine motor	Cognition	Language	Social skills	Self-help
K-BSID-II
Mental Q	0.38	0.55	0.60	0.68	0.67	0.53
Motor Q	0.57	0.61	0.59	0.61	0.66	0.62
K-WPPSI
FSIQ	0.64	0.63	0.62	0.65	0.61	0.52
VIQ	0.62	0.62	0.72	0.74	0.61	0.45
PIQ	0.69	0.66	0.64	0.63	0.58	0.48

K-DST, Korean Developmental Screening Test for Infants and Children; K-BSID-II, Korean Bayley Scales of Infant Development-II; Mental Q, mental age quotient; Motor Q, Motor age quotient; K-WPPSI, Korean Wechsler Preschool and Primary Scales of Intelligence; FSIQ, full scale intelligence quotient; VIQ, verbal intelligence quotient; PIQ, performance intelligence quotient.