Play one of the passages through the headphone attached to the right ear.Afterwards, you will be asked to answer some questions about the passage.” Please pay attention and listen carefully while the passage is read. I will press play, and a short passage will be read aloud to you through the headphone in your right ear. “In a moment, I will ask you to put one headphone in each of your ears.Explain the instructions for the baseline condition to the participant, as follows:.The second session involves two different passages played simultaneously, one to each ear, with instructions to attend to one of them.The first session is a baseline, with only a single audio passage intended to measure baseline listening comprehension without a second stimulus present.Set up the experiment to include two listening and test sessions. Keep in mind that the goal of this experiment is to compare the ability to retain information for selectively attended stimuli compared to unattended stimuli.Print out the questions for each passage for the participant to complete after hearing the relevant recordings.Record one person reading each of the selected pieces, and create three individual audio files.For this demonstration, two pieces of text and their associated questions selected can be found in Appendix 1. A good source for this kind of material is publicly available reading comprehension texts and questions from exams like the Scholastic Aptitude Test.Comprehension questions are also necessary. These recordings are the stimuli for dichotic listening. Select three different recordings with informational content that can be tested for comprehension.But it can be done easily and without technical expertise by using two separate pieces of hardware. This can be done with a sound mixer or with a computer. Ultimately, the experiment requires the ability to play two separate auditory signals through separate headphones. Use two sets of headphones and two pieces of hardware for playing auditory stimuli.This experiment demonstrates standard procedures for investigating selective auditory attention with a paradigm called dichotic listening. This is called a dichotic listening paradigm. In order to study how people do this, researchers simulate a more controlled cocktail party environment by playing sounds to participants dichotically, i.e., by playing different sounds simultaneously to each ear. However, everyone has the ability to selectively listen to one conversation, leading all the rest to become unattended to and nothing more than background noise. Think of a cocktail party: a person couldn’t possibly attend to all of the conversations taking place at once. Selective attention is the mechanism that allows humans and other animals to control which stimuli get processed and which become ignored. Nonetheless, the world is complicated, and there are always many things going on at once. It is a well-known fact that the human ability to process incoming stimuli is limited. Source: Laboratory of Jonathan Flombaum-Johns Hopkins University
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