Descriptor
| Addition | 1 |
| Age Differences | 1 |
| Cognitive Processes | 1 |
| Concept Formation | 1 |
| Mediation Theory | 1 |
| Primary Education | 1 |
| Reaction Time | 1 |
| Subtraction | 1 |
Source
| Child Development | 1 |
Author
| Olson, David R. | 1 |
| Pike, Ruth | 1 |
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Peer reviewedPike, Ruth; Olson, David R. – Child Development, 1977
Developmental changes in 5- to 7-year-old children's mental representation of addition and subtraction events were examined by means of the response times required to answer more or less questions. (Author/JMB)
Descriptors: Addition, Age Differences, Cognitive Processes, Concept Formation
