Bayley Scales of Infant Development Bay·ley Scales of Infant Development (bā'lē)
pl.n.
Standardized tests used to assess the mental, motor, and behavioral progress of children during the first two and one-half years of life.
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
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