What does the value of an unstandardized regression coefficient mean?

Looking at the unstandardized regression coefficient value for parenting style, what does it say about the effect of parenting style on aggression?

What does the unstandardized regression coefficient value say about the effect of good diet on aggression? (Note: Value is negative.)

Looking at the standardized regression coefficients, which predictor of aggression made the most important contribution to model fit? How do you know?

ANOVAa Model Sum of Squares df Mean Square F Sig 1 Regression 3.612 2 1.806 18.644 000b Residual 64.230 663 097 Total 67.842 665 2 Regression 4.736 3 1.579 16.561 00OC Residual 63.106 662 .095 Total 67.842 665 3 Regression 5.554 1.389 14.735 .000d Residual 62.288 661 094 Total 67.842 665 a. Dependent Variable: Aggression b. Predictors: (Constant), Parenting Style, Sibling Aggression c. Predictors: (Constant), Parenting Style, Sibling Aggression, Use of Computer Games. d. Predictors: (Constant), Parenting Style, Sibling Aggression, Use of Computer Games., Good We have Diet decided Model Summary to Change Statistics conduct Mode Adjusted R Std. Error of R Square Durbin this R R Square Square the Estimate Change F Change if1 df2 Sig. F Change Watson 231 053 050 31125 053 18.644 663 DOO 2 2640 070 066 30875 017 11.78 2860 082 076 30697 .012 8.682 661 003 1.911 a. Predictors: (Constant), Parenting Style, Sibling Aggression b. Predictors: (Constant), Parenting Style, Sibling Aggression, Use of Computer Games. C. Predictors: (Constant), Parenting Style, Sibling Aggression, Use of Computer Games., Good Diet d. Dependent Variable: Aggression regression analysis hierarchically, entering parenting style and sibling aggression in the first model and the remaining predictor variables in the second and third models. Consider the following tables in answering questions 1 to 12:Coefficients Standardized Unstandardized Coefficients Coefficients 95% Confidence Interval for B Correlations Collinearity Statistics Model B Std. Error Beta Sig. Lower Bound Upper Bound Zero-order Partial Part Tolerance VIF Constant .006 .012 ..479 632 .029 018 Sibling Aggression 093 038 096 2.491 .013 .020 167 129 .096 .094 970 1.031 Parenting Style 062 .012 .194 5.057 .000 038 086 211 .193 .191 .970 1.031 2 (Constant) .007 .012 -.574 566 .030 017 Sibling Aggression 068 038 .070 1.793 073 -.006 142 129 070 067 933 1.072 Parenting Style 054 .012 170 4.385 000 030 .079 211 168 164 .937 1.067 Use of Computer Games 126 037 .134 3.433 .001 054 197 .186 132 129 .918 1.090 w (Constant) -.006 012 -.497 619 .029 017 Sibling Aggression 086 038 .088 2.258 024 .011 161 129 087 084 908 1.101 Parenting Style 062 .013 194 4.925 000 037 087 211 .188 184 897 1.115 Use of Computer Games. 143 037 153 3.891 000 071 216 .186 150 145 893 1.120 Good Diet -.112 038 -.118 -2.947 003 ..186 . .037 .009 -.114 -.110 870 1.150 a. Dependent Variable: Aggression