| Standardized regression equation | Regression coefficient test | |

Step 1 | Y = 0.268x | SE = 0.109 | t = 3.222** |

Step 2 | M = 0.53x | SE = 0.104 | t = 7.244** |

Step 3 | Y = 0.265M | SE = 0.089 | t = 2.769** |

| +0.127x | SE = 0.126 | t = 1.329 |