Final answer:
Random assignment is a technique used in experiments to assign participants to different groups with an equal chance for each participant. It helps ensure comparability between groups and attribute any differences observed to the independent variable manipulation.
Step-by-step explanation:
Random assignment is a technique used in experiments to assign participants to different groups. With random assignment, each participant has an equal chance of being assigned to any group. This helps to ensure that the groups are comparable and any differences observed between the groups can be attributed to the manipulation of the independent variable. Random assignment is a key component of sound experimental design.