Discussion Paper Series Social Media Use and Children’s Wellbeing

TABLE 5: Model diagnostics for IV random effects ordered probit models
PANEL A: IV=Avsyncspeed
(1)
School work
(2)
Appearance
(3)
Family
(4)
Friends
(5)
School
Cross-equation correlation 0.252***
(0.032)
0.253***
(0.029)
0.186***
(0.035)
-0.185
(0.136)
0.311***
(0.036)
0.281***
(0.032)
Instrument in outcome equation
Avsyncspeed 0.005 0.003 0.001 -0.011*** 0.002 0.001
(0.004) (0.004) (0.005) (0.004) (0.004) (0.004)
NETCHAT -0.074*** -0.072*** -0.134*** 0.022 -0.053** -0.094***
(0.020) (0.021) (0.026) (0.022) (0.021) (0.022)
PANEL B: IV=Notrec2mb
Cross-equation correlation 0.278***
(0.027)
0.248***
(0.029)
0.209***
(0.035)
0.057
(0.035)
0.366***
(0.027)
0.315***
(0.051)
Instrument in outcome equation
Notrec2mb -0.001 -0.003 0.004 0.011*** 0.002 0.003
(0.004) (0.004) (0.005) (0.004) (0.004) (0.004)
NETCHAT -0.075*** -0.072*** -0.135*** 0.023 -0.054** -0.095***
(0.020) (0.021) (0.026) (0.022) (0.021) (0.022)
PANEL C: IV=Signal 3G
Cross-equation correlation 0.491***
(0.026)
0.296***
(0.026)
0.276***
(0.041)
0.126***
(0.036)
0.392***
(0.026)
0.365***
(0.028)
Instrument in outcome equation
Signal 3G 0.001 0.001 0.001 -0.001 0.000 0.000
(0.001) (0.001) (0.001) (0.001) (0.001) (0.001)
NETCHAT -0.075*** -0.072*** -0.134*** 0.025 -0.054** -0.094***
(0.020) (0.021) (0.026) (0.022) (0.021) (0.022)
PANEL D: Sargan tests
Avsyncspeed & Signal 3G
χ 2 (1); p-value 3.305; p=0.581 3.343; p=0.168 0.027; p=0.868 0.198; p=0.657 0.441; p=0.507 0.067; p=0.796
Notrec2mb & Signal 3G
χ 2 (1); p-value 0.891; p=0.345 0.962; p=0.327 2.259; p=0.133 1.436; p=0.231 0.310; p=0.578 1.388; p=0.239
Notes: (i) standard errors are given in parentheses; (ii) *** p