Interpreting some regression coefficients of simple main effect and moderation analysis. How to interpret?

I did 2 regressions: Y = B0 +B1x1 + e and Y = B0 + B1x1 +B2x2 +B3x1*x2 + e (moderation) In the simple main effect, B1 is positive and significant. In the moderation analysis B1 become negative...

30 March 2020 9,079 3 View