91影视

a. The rate of increase of team performance with time pressure depends on effectiveness of the team leader will be determined by the interaction term. The interaction term explains the relation between the independent variables (here time pressure and effectiveness of the team leader) and how that relationship affects the dependent variable (team performance).

b. For given fixed time pressure, the changes in mean team performance for teams with effective and non-effective team leaders can be explained for effective team leader by

.$$\begin{gathered} byE\left(y\right)=({尾}_0+{尾}_3)+({尾}_1+{尾}_4)x_1+({尾}_2+銆�{尾}_5)x_1{銆�}^2 \\ andfornon-effectiveteamleaderby \\ E\left(y\right)={尾}_0+{尾}_1{x}_1+{尾}_2銆�x_1{銆�}^2. \end{gathered}$$

For given fixed time pressure, the changes in mean team performance for teams with effective and non-effective team leaders can be explained by putting x₂ = 1 and 0 for effective and non-effective leader respectively.

Mathematically, for effective team leader

$$\begin{gathered} E\left(y\right)={尾}_0+{尾}_1{x}_1+{尾}_2銆�x_1{銆�}^2+{尾}_3{x}_2+{尾}_4{x}_1{x}_2+{尾}_5銆�x_1{銆�}^2{x}_{2}for{x}_2=1 \\ E\left(y\right)={尾}_0+{尾}_1{x}_1+{尾}_2銆�x_1{銆�}^2+{尾}_3\left(1\right)+{尾}_4{x}_1\left(1\right)+{尾}_5銆�x_1{銆�}^2\left(1\right) \\ E\left(y\right)=({尾}_0+{尾}_3)+({尾}_1+{尾}_4)x_1+({尾}_2+銆�{尾}_5)x_1{銆�}^2 \\ Andfornon-effectiveteamleader \\ E\left(y\right)={尾}_0+{尾}_1{x}_1+{尾}_2銆�x_1{銆�}^2+{尾}_3{x}_2+{尾}_4{x}_1{x}_2+{尾}_5銆�x_1{銆�}^2{x}_{2}for{x}_2=0 \\ E\left(y\right)={尾}_0+{尾}_1{x}_1+{尾}_2銆�x_1{銆�}^2+{尾}_3\left(0\right)+{尾}_4{x}_1\left(0\right)+{尾}_5銆�x_1{銆�}^2\left(0\right) \\ E\left(y\right)={尾}_0+{尾}_1{x}_1+{尾}_2銆�x_1{銆�}^2 \end{gathered}$$