| Course | PS200 Introduction to Cognitive Psychology |
|---|---|
| Unit | Unit 2 |
| Paper type | Perception and attention paper |
| Length | About 560 words, 5 pages double-spaced |
| Format | APA 7 student paper |
| School | Purdue University Global |
| Program | BS in Psychology |
| Updated | October 2026 |
Free sample paper for PS200 Unit 2
What the Console Lets You See: A PS200 Unit 2 Perception and Attention Paper on a 911 Call-Taker's Night Shift
[Student Name]
Purdue University Global
PS200: Introduction to Cognitive Psychology
Unit 2 Perception and Attention Paper
[Instructor Name]
[Date]
The call center, its console and the call-taker are composite; the studies cited are real.
The Setting
A call-taker's console has three screens: the call-handling screen with caller location and a timer, the computer-aided dispatch form where details are typed, and a map. A headset carries the caller's voice, while radio traffic from dispatchers plays quietly through a speaker. Every minute of a busy night, the call-taker must perceive speech that is often distorted, decide what to attend to among several changing displays and act within seconds.
Perception: Hearing What We Expect
Perception is not a recording of the world; it combines incoming sensory data with what the perceiver already knows. Bottom-up processing builds a percept from the stimulus itself, while top-down processing uses expectations and context to interpret it (Goldstein, 2019). When speech is clear, the two agree. When it is not, top-down processing fills the gaps. Warren (1970) replaced one sound in a recorded sentence with a cough, and listeners not only understood the sentence but reported hearing the missing sound, and could not say where the cough had been.
That helps explain the Fulton error from Unit 1. A distressed caller produced a degraded signal, and the call-taker's expectations, built on hundreds of calls from a street with similar sounds, completed it. The same mechanism that lets call-takers understand panicked callers at all sometimes produces confident mistakes.
The process that lets a call-taker understand a sobbing caller is the same one that occasionally hears the wrong street.
Selective Attention: One Voice Among Many
Attention is limited, so the call-taker must select. Cherry (1953) asked listeners to repeat one message aloud while another played in the other ear; they could report almost nothing about the unattended message's content, though they noticed when its voice changed from male to female. A call-taker attending to a caller hears radio traffic in the same way, as background whose content is lost. That is useful until the radio carries something the call-taker needs, such as a unit reporting the same incident.
A flashing second line is a different problem. Sudden onsets and movement capture attention automatically, so a blinking indicator can pull focus away from the caller at exactly the moment an address is spoken.
Inattentional Blindness: Missing What Is in Plain View
Simons and Chabris (1999) asked observers to count basketball passes in a video; about half failed to notice a person in a gorilla suit who walked through the scene. Looking is not the same as seeing when attention is committed elsewhere. On the console, an alert that appears in a corner of the map while the call-taker's attention is on the dispatch form can be missed even though it is in plain view.
What This Suggests
The research suggests three practical changes, which later units will develop. Read every address back to the caller, because top-down errors feel certain to the person who makes them. Silence or dim nonurgent indicators while an address is being taken. And place critical alerts where attention already is, on the form being typed, rather than in the corner of the map.
References
Cherry, E. C. (1953). Some experiments on the recognition of speech, with one and with two ears. The Journal of the Acoustical Society of America, 25(5), 975-979. https://doi.org/10.1121/1.1907229
Goldstein, E. B. (2019). Cognitive psychology: Connecting mind, research, and everyday experience (5th ed.). Cengage Learning.
Simons, D. J., & Chabris, C. F. (1999). Gorillas in our midst: Sustained inattentional blindness for dynamic events. Perception, 28(9), 1059-1074. https://doi.org/10.1068/p281059
Warren, R. M. (1970). Perceptual restoration of missing speech sounds. Science, 167(3917), 392-393. https://doi.org/10.1126/science.167.3917.392
The Purdue Global PS200 Unit 2 instructions
In PS200's second unit, the paper typically asks how perception and attention work and where they fail in a real setting. Describe the setting concretely, including what a person must see, hear and respond to. Explain bottom-up and top-down processing and show both at work in the setting. Cover selective attention, including what is filtered out and what captures attention automatically, and explain inattentional blindness with an accurate account of the research behind it. Describe classic studies by their method and finding, not by a catchphrase. Finish with console or workplace changes the findings justify. Cite the course text and at least two primary studies in APA style, and keep each finding tied to a specific moment in the setting.
How the PS 200 Unit 2 example is put together
The paper describes the console's call screen, dispatch form, map, headset and radio speaker. A perception section explains bottom-up and top-down processing through Warren's coughed sound and the Folsom error, under a highlighted line that the same process lets a call-taker understand a sobbing caller. Selective attention follows, with Cherry's two-message listeners noticing a voice change but not content, applied to radio traffic, and a paragraph on flashing indicators. A section on inattentional blindness reports that about half of Simons and Chabris's observers missed the gorilla and links it to map alerts. Three changes close the paper: read-backs, dimming nonurgent lights and moving alerts to where the eyes already are.
Where the points sit in the PS200 Unit 2 rubric
Points in this paper come from accurate explanation and genuine application. Instructors look for bottom-up and top-down processing explained correctly and then shown in the setting, not left as definitions. Classic studies earn credit when their method and result are reported accurately; Simons and Chabris and Cherry are often misdescribed. A paper that distinguishes what attention filters out from what captures it shows deeper understanding. Practical recommendations should follow from the research rather than from common sense alone. Goldstein's text plus two or three original experiments usually suffice as sources. Organization around the processes, with the setting woven through, tends to score better than a paper that alternates between theory and anecdote.
Common PS200 Unit 2 mistakes, and how to avoid them
The most common slip is defining perception and attention at length and never applying them, which reads like a textbook summary. Another is misreporting the gorilla study, claiming nobody noticed the gorilla or that it lasted only a moment. Students often treat attention as a single spotlight and miss the difference between voluntary focus and automatic capture. Settings are sometimes described so vaguely that no recommendation can follow. Recommendations frequently appear without a link to any finding. Before submitting, check that each study you cite is described with what participants did and what happened, that each process appears in at least one concrete moment in your setting, and that each recommendation names the finding it rests on.
Get a PS200 Unit 2 example written to your instructions
Share the setting and the instructions with the rubric. A custom paper applies perception and attention research to the setting with examples. Turnaround is 24-48h, free the first time. The paper above is an original model document written by our desk, not a submitted student paper and not an official Purdue University Global document.
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PS200 Unit 2 questions, answered
What is inattentional blindness?
Failing to notice something visible because attention is elsewhere, shown in studies such as Simons and Chabris's gorilla experiment.
What is the difference between bottom-up and top-down processing?
Bottom-up builds perception from the stimulus; top-down uses expectations and knowledge.
Does the paper need a real setting?
An applied setting usually earns more than abstract description.
Where can I find a free PS200 Unit 2 sample paper?
This page carries the full PS200 Unit 2 paper applying perception and attention research to a composite 911 call-taker's console, with three changes.
How does the PS200 Unit 2 sample use the gorilla study?
It explains why an alert in a corner of the map can go unseen while the call-taker's attention is on the dispatch form.