Moderator meaning - Moderato

If we subtract the mean of the SWLS score for the sample from each participant's score, the mean of the resulting centered SWLS score is zero.

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Centering involves subtracting the overall sample mean score from the original score; standardizing does the same followed by dividing by the overall sample standard deviation.

In this case, low reliability of the interaction term leads to low power; therefore, we may not be able to find the interaction effects between A and B that actually exist.