| (1) | (2) | (3) | (4) | (5) | (6) | |
| A/national core sample | B/Shanghai | C/Floating population area | ||||
Language achievement | a1/Native | a2/Outsiders | b1/Native | b2/Outsiders | c1/Native | c2/Outsiders | |
Communication frequency | −0.549** | 0.420 | 0.313 | 0.292 | 0.291 | −1.031* | |
| (0.192) | (0.510) | (0.651) | (1.144) | (0.254) | (0.437) | |
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Relationship evaluation | 1.076*** | 0.708 | 0.824 | 1.267 | 1.314*** | 1.498*** | |
| (0.164) | (0.504) | (0.523) | (1.073) | (0.222) | (0.407) | |
Sample size | 3933 | 382 | 367 | 117 | 1884 | 550 | |
1) Students who only include groups of rural households | |||||||
Communication frequency | −0.642** | 0.598 | −2.802 | 1.618 | 0.702 | −0.797 | |
| (0.246) | (0.751) | (3.836) | (2.547) | (0.475) | (0.551) | |
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Relationship evaluation | 0.909*** | 0.521 | 2.296 | 5.239 | 0.744 | 1.212* | |
| (0.205) | (0.673) | (3.034) | (3.143) | (0.396) | (0.489) | |
Sample size | 2598 | 217 | 28 | 37 | 548 | 340 | |
2) Add control variables parent-child relationship variables (contact frequency and relationship evaluation) | |||||||
Communication frequency | −0.542* | 0.0692 | 0.651 | −0.294 | 0.392 | −1.148* | |
| (0.211) | (0.563) | (0.674) | (1.356) | (0.271) | (0.493) | |
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Relationship evaluation | 0.843*** | 0.430 | 0.766 | 1.186 | 1.058*** | 1.643*** | |
| (0.178) | (0.550) | (0.542) | (1.146) | (0.242) | (0.442) | |
Sample size | 3488 | 333 | 351 | 110 | 1746 | 491 | |