 In a typical experiment, subjects would use a set of headphones to listen to two streams of words in different ears and selectively attend to one stream.After the task, the experimenter would question the subjects about the content of the unattended stream.Broadbent's Filter Model of Attention states that information is held in a pre-attentive temporary store, and only sensory events that have some physical feature in common are selected to pass into the limited capacity processing system.