| Cameroon | Athens, Greece | |
|---|---|---|
| I. Infant–mother play at 3 months | ||
| Percent of time held by mother | 100% | 31% |
| Percent of time playing with objects | 3% | 40% |
| II. Toddler behaviour at 18 months | ||
| Self-recognition | 3% | 68% |
| Immediate compliance with request | 72% | 2% |
| Source: Adapted from Keller et al., 2004. | ||