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What is a block randomizer?

A block randomizer displays blocks of questions in an undefined sequence in real-time to the survey respondents. It changes the order of survey blocks presented to the respondents. Further, you can either keep the sequence of questions within a block as constant or randomize that too.

Why structure a survey using a block randomizer?

The quality of data depends on various factors. Some of them are the type of questions asked, the depth and breadth, number, topics covered, research method, etc.

Another factor that affects data quality is the order of questions. The sequence of items can impact the way a respondent thinks and make choices. Hence, there is a high possibility that the respondents may feel inclined to answer in a particular direction.

Thus, the survey creator unknowingly affects the way a respondent answers the questions. This effect is known as order bias and affects the results of the research. Reports generated from the data inflicted with order bias generate inaccurate insights.

A block randomizer lets you select a group of questions that must be asked to respondents in random order. You can keep one or more blocks fixed and randomize the order of others. Alternatively, you can also display all blocks of questions randomly. You can also randomize questions within a survey block.

Example of a survey block randomizer

Consider an online quiz with questions on different subjects like history, geography, math, language, art, sports, etc. You can add blocks of questions for each topic. For students majoring in history, the history question block will be kept constant. You can present other blocks randomly.

Randomize block of questions

Uses of a block randomizer

Advantages of survey block randomization

How to randomize the order of a block of questions?

Learn how to set up and use this feature with our help file on Survey Block Randomizer.

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