Easy
Moderation Analysis
SPSS
Free
A student runs a moderation analysis in SPSS using hierarchical regression. Step 1 includes predictors: StudyHours (X) and Anxiety (W). Step 2 adds the interaction term StudyHours×Anxiety. SPSS shows the following change statistics for Step 2: ΔR² = .04, F-change = 6.50, p = .012. What is the best conclusion?
A
There is evidence of moderation because adding the interaction significantly improves model fit (p = .012).
B
There is no moderation because main effects were already included in Step 1.
C
There is evidence of mediation because ΔR² increased in Step 2.
D
The moderator must be removed because ΔR² is “too small” to matter.