Categorical Looks describe how categorical questions are to appear in a paper questionnaire. Categorical questions are questions that have a predefined list of responses or categories. Categorical questions can be single response or multiple response. When answering a single response question, the respondent must choose only one category as the answer; for example, the question Have you visited this museum before? to which the respondent must answer Yes or No. When answering a multiple response question, the respondent can choose more than one category from the category list as the answer; for example, the question What do you remember seeing in the museum today? in answer to which the respondent can choose any number of items in a list.

You can apply the same categorical Look to both single response questions and multiple response questions. Alternatively, you can apply one categorical Look to single response questions and another to multiple response questions.