| X |
X is the independent variable of the mediation model (Self concept). |
| Y |
Y is the dependent variable of the mediation model (Self directed learning). |
| M1 |
M1 is the mediator variable in the mediation model (Self-efficacy). |
| M2 |
M2 is the mediator variable in the mediation model (Learning environment adaptation). |
| a1 |
The effect coefficient of the independent variable X on the mediating variable M1. |
| a2 |
The effect coefficient of the independent variable X on the mediating variable M2. |
| b1 |
The effect coefficient of the mediator variable M1 on the dependent variable Y. |
| b2 |
The effect coefficient of the mediator variable M2 on the dependent variable Y. |
| c2 |
The direct effect of independent variable X on dependent variable Y. |
| c1 |
The indirect effect of independent variable X on dependent variable Y |
| d |
The effect coefficient of the mediator variable M1 on mediating variable M2. |
| ε1,ε2,ε3,ε4 |
The error terms for equations 1, 2, 3and4. |
| N |
Statistical sample size. |
| r |
Pearson correlation coefficient. |
| $$\chi _{model}^2$$ |
The chi square value of the model |
| dfmodel |
The degrees of freedom of the model |
| $$\chi _{baseline}^2$$ |
The chi square value of the benchmark model |
| dfbaseline |
The degrees of freedom of the benchmark model |
| Sobserved |
Observation covariance matrix |
| Sfitted |
Covariance matrix for model fitting |
| β |
Standardized coefficients. |
| t |
The significance level of the difference between sample results and population parameters. |
| R2 |
The goodness of fit of the model. |
| F |
The significance of the impact of variables on response variables. |
