| A | B |
| aggressive | strong-willed and determined |
| attachment | a strong bond that develops between two people |
| consistency | repeatedly acting in the same way |
| emotional development | a child's changing feelings about themselves, others and the world |
| marasmus | severe physical decline caused by a lack of proper food or neglect |
| pacifier | used to comfort a baby |
| personality | total of all specific traits that are consistent in an individual's behavior |
| placid | easy-going ¬ easily upset |
| self-concept | how a person feels about himself |
| sensitive | very aware of their surroundings and changes in them |
| social development | from self-centered to thinking of others |
| stranger anxiety | stage when a baby screams when a stranger approaches |