PLS Analysis Wizard Between Design - Custom Between Design Tab

Select the Custom between design tab of the PLS Analysis Wizard Between Design dialog box to access options to specify the effects for the between group design, i.e., for the continuous and categorical predictor variables. Note that categorical or continuous predictor variables that are not selected into the Effects in between design group box, but were selected via the Variables button on the PLS Analysis Wizard Between Design dialog box, will automatically be dropped from the analysis.

Effects can be specified in the following manner:

• Select the Categorical and/or Continuous predictor variables under Predictor variables by clicking on them; select multiple variables by holding down the CTRL key while clicking on the respective variables; select a list of consecutive variables by dragging the mouse over the list.
• Choose the desired action by clicking the respective button under Method.

The specified effects will automatically be listed in the Effects in between design box. You can further edit the effects in the Effects in between design box by using the following options:

Element Name	Description
Predictor variables: Categorical/Continuous	The boxes under Predictor variables contain the Categorical and/or Continuous predictor variables selected for the current analysis. Select the variables you want to include in the design.
Method	In the Method group box are the available options for including the selected variables as effects in the design. Some options are available only if the appropriate number and types of variables are chosen in the Predictor variables group box. See also the description of the PLS Syntax, in particular the DESIGN keyword for details on how to specify designs in GLM, GRM, GLZ, PLS, GDA, and ANOVA. For a discussion of various designs (e.g., surface, mixtures, nested), see the Types of Analyses topic in the Introductory Overview.
Add	Click the Add button to add the main effects for the chosen Categorical and Continuous predictor to the list of Effects in between design.
Full cross	Click the Full cross button to create the respective interaction term for all selected variables (e.g., Gender*Group*Time). Note that this button is only available if two or more categorical and/or continuous predictor variables are selected.
Hierarc. nest.	Click the Hierarc. nest (hierarchical nesting) button to display the Nesting for Between-Group Factors dialog box; in that dialog box, specify the nested structure of the design for the selected variables; see also the description of the DESIGN keyword for additional details. Note that this button is only available if two or more categorical and/or continuous predictor variables are selected.
Full factorial	Click the Full factorial button to create a full factorial design for the selected variables (e.g., Group Gender Time Group*Gender Group*Time Gender*Time Group*Gender*Time). Note that this button is only available if two or more categorical and/or continuous predictor variables are selected.
Surface	Click the Surface button to create a response surface design. If a categorical variable is selected, the design will be blocked (e.g., Block Degrees Degrees*Degrees Time Time*Time Degrees*Time; see also the Experimental Design Overview for details). Note that the variables involved in the surface design will be flagged with an {S} next to them in the Effects in between design box. Note that this button is only available if two or more continuous predictor variables are selected; it is not available if more than one categorical predictor (blocking variable) is selected.
Fact. to deg.	Click the Fact. to deg. (factorial to degree) button to create a factorial design (up to the degree specified in the Degree field) for the selected variables (e.g., Group Gender Time Group*Gender Group*Time Gender*Time). Note that this button is only available if two or more categorical and/or continuous predictor variables are selected.
Poly. to deg.	Click the Poly. to deg. (polynomial to degree) button to create a polynomial design (up to the degree specified in the Degree field) for the selected variables (e.g., Degrees Time Degrees*Degrees Time*Time). Note that this button is only available if one or more continuous predictor variables are selected and no categorical predictor variable is selected.
Degree	Use the Degree field in conjunction with the Fact. to deg. and Poly.to deg. options; see above.
Effects in between design	The Effects in between design box shows the effects currently in the design. These effects can further be edited via the following options:
Cross	Click the Cross button to cross two effects currently selected in the Effects in between design group box; e.g., if two effects A and B(C) are currently selected, then Cross will add the term A*B(C) to the effects in the design. If more or fewer than two effects are selected, this button is not available.
Nest	Click the Nest button to nest two effects currently selected in the Effects in between design group box; e.g. if two effects A and B are currently selected, then Nest will (1) add the term B(A) (factor B is nested in factor A) to the effects in the model and (2) remove the B main effect from the effects in the model. If more or fewer than two effects are selected, this option is not available.
Remove	Click the Remove button to remove the selected effects from the Effects in between design group box.
Clear all	Click the Clear all button to remove (clear) all effects from the Effects in between design group box. Note: Reordering effects. To reorder the effects in the Effects in between design group box, first select them (e.g., click on the effect or list of effects), then move the mouse cursor to the desired location in the list, and when the mouse cursor changes to the insertion bar , click the mouse button to move the selected effects.