Abstract
Children between 2 years, 6 months old and 3 years, 2 months old correctly discriminate the relative number of objects in two rows; between 3 years, 2 months and 4 years, 6 months they indicate a longer row with fewer objects to have "more"; after 4 years, 6 months they again discriminate correctly. The discriminative ability of the younger children shows that the logical capacity for cognitive operations exists earlier than previously acknowledged.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 141-142 |
| Number of pages | 2 |
| Journal | Science |
| Volume | 158 |
| Issue number | 3797 |
| DOIs | |
| State | Published - 1967 |
ASJC Scopus subject areas
- General