| A | B |
| middle childhood | refers to the span of years between ages 6 and 12 |
| farsighted | seeing objects in the distance more clearly than those that are close |
| nearsighted | seeing objects closer more clearly than those that are in the distance |
| asthma | respiratory disorder that causes labored breathing and wheezing |
| obesity | characterized by excessive body fat |
| rehearsal | the repetition of information after it is used |
| operation | the manipulation of ideas based on logic rather than perception |
| concrete operation | using logic but it is based on experiences or what has been seen |
| conservation | change in position or shape of substances does not change the quantity |
| seriation | ability to arrange items in an increasing or decreasing order based on weight, volume, or size |
| classification | the ability to group objects by common attributes, such as size |
| social comparison | process where people define themselves in terms of the qualities, skills, and attributes they see in others |
| self-concept | the view a person has of himself or herself |
| self-esteem | the belief that you are worthwhile as a person |
| empathy | the ability to understand the feelings of others |
| compassion | being aware of others' distress and wanting to help them |
| moral development | the process of aquiring the standards of behavior considered acceptable by society |
| morality | the understanding and using accepted rules of conduct when interacting with others |