A Step by Step Guide for SPSS and Exercise Studies

Statistical tests 105
Figure 32
disengagement). For each main effect (anxiety intensity and direction) and for
the interaction effect (intensity direction) you should present the Wilk’s
lambda, the associated F value, the degrees of freedom and the significance
level of the F value (see Table 33). If any of the multivariate F values is
significant, you should proceed and report the univariate effects (F value, df, and
significance level; see Table 34). If an independent variable has more than two
groups you should mention the results of post-hoc tests or planned comparisons.
Results of a MANOVA test can be reported in a table format similar to the one
in Example 4.
General Linear Model/Repeated Measures
Pre-test/post-test designs have been described before in the Compare means/
Paired Samples T Test option of the Analyze menu. However, such designs look
at changes in the scores of one dependent variable over two periods of time.
With the repeated measures test you can examine more complicated designs.
Assumptions
All the assumptions described for ANOVA and MANOVA tests are also
applicable to repeated measures. To analyse repeated measures you can take
either a multivariate approach or a univariate approach (Nevill, 2000). The