The elevated plus maze test is one of the most widely used tests for measuring anxiety-like behavior. The test is based on the natural aversion of mice for open and elevated areas, as well as on their natural spontaneous exploratory behavior in novel environments. This test has a strong validity profile for anxiolytic drug validation and screening. All open arms include 1cm high end plates to ensure the mice do not fall off the maze during exploration.
Variation 2: a variation of the elevated plus maze is the elevated cross maze, which utilizes a clear central area with 4 door partitions.