Preliminary Instructions (also known as Pre-instructions) are a set of directives given to participants before they engage in an experiment or task. The goal of these instructions is to provide the necessary information to ensure that the test or experiment is conducted accurately and efficiently. Preliminary instructions can include how to set up the environment, what to do if a problem arises, and how to provide feedback. There are several types of Preliminary Instructions, such as: 1. Participant Information Instructions: These provide an overview of the experiment, the purpose of the experiment, and the expected outcome. This type of instruction also outlines the participant's role in the experiment. 2. Task Instructions: These are a set of instructions for the participant to follow while they are completing the task. They should be clear and concise, and should provide the participant with enough information to complete the task successfully. 3. Safety Instructions: These are important instructions to ensure the safety of the participant and any other people involved in the experiment. These instructions may include what the participant should avoid doing, what safety equipment should be used, and any safety precautions that should be taken before, during, and after the experiment. 4. Calibration Instructions: These are instructions for calibrating any equipment that may be used in the experiment. This type of instruction should provide clear and detailed information on how to properly set up and use the equipment. 5. Data Collection Instructions: These provide guidance on how to collect and record data during the experiment. This type of instruction should provide the participant with clear instructions on how to properly record and store the data. 6. Feedback Instructions: These provide instructions on how the participant should provide feedback after the experiment. This type of instruction should provide clear guidance on how to provide constructive and useful feedback.