during the test, a technical expert will be available to reveal limited but crucial information needed to use the product. (See the gradual disclosure technique in Chapter 13 for an explanation of how to use a technical expert in this way.) Primitive help topics, available en paper only, will be provided to the participant on demand; that is, when the participant clicks the appropriate prompt or asks a question, the test nuxlerator will provide what would normally be embedded assistance, instruction prompts, or messages on paper as they would appear on the screen.
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