Table 4. Correlation matrix of the variables in the model across three waves.

SMSCFt1

SMSCFt2

SMSCFt3

MFt1

MFt2

MFt3

SVt1

SVt2

SVt3

LSt1

LSt2

LSt3

SMSCFt1

—

SMSCFt2

0.63***

—

SMSCFt3

0.66***

0.72***

—

MFt1

-0.42***

-0.40***

-0.42***

—

MFt2

-0.43***

-0.48***

-0.52***

0.78***

—

MFt3

-0.38***

-0.45***

-0.48***

0.74***

0.82***

—

SVt1

-0.19***

-0.21***

-0.12*

0.29***

0.35***

0.21***

—

SVt2

-0.19***

-0.28***

-0.22***

0.34***

0.43***

0.34***

0.79***

—

SVt3

-0.20***

-0.26***

-0.21***

0.25***

0.42***

0.33***

0.78***

0.77***

—

LSt1

-0.08*

-0.14**

-0.08

0.22***

0.20***

0.15**

0.60***

0.54***

0.53***

—

LSt2

-0.11*

-0.19***

-0.19**

0.25***

0.31***

0.31***

0.52***

0.60***

0.53***

0.84***

—

LSt3

-0.09

-0.16**

-0.11*

0.19***

0.27***

0.25***

0.48***

0.53***

0.56***

0.78***

0.84***

—

N_T1 = 594, N_T2 = 410, N_T3 = 329, SMSCF = social media self-control failure, MF = mindfulness, SV = subjective vitality, LS = life satisfaction.

* p < .05,

** p < .01,

*** p < .001.