Side Effects of Editing

Note: Editing a design after one or more subjects has already performed the experiment can have a side-effect of producing inconsistent data files. To avoid this side-effect, use the desired design as a template and save it under another name. The following list shows a list of features and the effect of changing the value:

Page	Feature	Change	Effect
page 2/4	Item list	adding or deleting items re-ordering list	Inconsistent data and design files
	Item list	changing spelling	Results will be based on most recent list
	Presentation Order	change	OK
page 3/4	Type: Unspecified, Specified, Fixed & unnamed	changing among these types	OK
	Type: Unspecified, Specified, Fixed & unnamed	Changing option for subjects' naming	Reports will be valid but interpretation will be more difficult
	Type: Pre-named	adding, deleting, or changing spelling	Inconsistent data and design files
		Presentation order	OK
		Changing to one of the other types	Minor loss of detail in some reports
page 4/4	Description	Modifying	OK
	Instructions	Modifying	Most recent instructions will be used for future trials
	Comments	Modifying	If turned off when reports are generated, comment report will be suppressed. If a subset of experiments are collected with commenting turned on, set the checkbox to 'Allow...' before viewing results.

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Version 2.5
Page last modified: 15 May 2002
National Institute of Standards and Technology (NIST)