| A | B |
|---|
| Acuity | Sharpness or clarity |
| Amblyopia | Lazy eye |
| Autonomy | Independence and sense of self. |
| Ossification | When cartilage is gradually replaced by bone tissue |
| Eustachian Tube | connects the middle ear to the oral pharynx |
| Lordosis | Exaggerated curvature of the lumbar curve |
| Ambivalence | Emotional state of having conflicting, opposite feelings, such as love and hate for a person or object |
| Negativistic behavior | Occurs as a result of frustration that the child encounters when their needs or wants are not met immediately |
| Separation anxiety | Is brought on by stress when the young child is separated from family by school, hospitalization, or family death |
| Sibling rivalry | feelings of jealousy and insecurity in the toddler. |
| Regression | Returns to an earlier form of behavior with which the child felt comfortable and secure, usually occurs in a time of stress |
| Object permanence | When the child understands that things will not disappear even when they cannot be seen. |
| Parallel play | When children play alongside with other children without interactions. |
| Three year gross motor | walks up steps using both feet |
| Three year fine motor | Builds a tower of blocks |
| Three year psychosocial | Possessive of own property |
| Three year cognitive | Knows relationship between things and persons |
| Three year language | Uses two words sentences |
| Toddler period | Includes years from 1 to 3 years old |
