Table 3.
Instrumental variable estimation.
| (1) | (2) | (3) | (4) | (5) | (6) | 7 | |
|---|---|---|---|---|---|---|---|
| Depress | Nervous | Calm | Hope | Difficulty | Meaningful | Robot | |
| Robot | 0.0189*** | 0.0100* | 0.0091* | 0.0166*** | 0.0069 | 0.0130*** | |
| (0.0061) | (0.0060) | (0.0053) | (0.0045) | (0.0053) | (0.0043) | ||
| Robot-IV | 13.6619*** | ||||||
| (0.2405) | |||||||
| Control variables | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Weak identification test | 3,227 | ||||||
| N | 6,644 | 6,644 | 6,644 | 6,644 | 6,644 | 6,644 | 6,644 |
| R 2 | 0.0211 | 0.0204 | 0.0185 | 0.0200 | 0.0257 | 0.0286 | 0.5059 |
Clustered robust standard errors are reported in parentheses below the coefficients. ***, **, and * denote significance at the 1%, 5%, 10% levels, respectively. Control variables are estimated as in the Table 2 benchmark.