SBS 105 Module 3 Sensation, Perception and Consciousness Example

Looking Without Seeing: Attention, Inattentional Blindness and a Near Miss at a Campus Crosswalk

Student Name

Psychology and Addiction Studies Program, Aspen University

SBS 105: Introduction to Psychology

Instructor Name

Month Day, Year

Looking Without Seeing: Attention, Inattentional Blindness and a Near Miss at a Campus Crosswalk

On a Tuesday afternoon, Jordan, a sophomore, stepped into a crosswalk near the campus library while typing a reply to a group chat. A car turning right from the side street rolled toward the crosswalk. Jordan kept walking and stopped only when the driver honked, a few feet away. Afterward, Jordan insisted, "I was looking right at the street. I just did not see the car." That statement, which sounds impossible, is exactly what psychologists who study perception would expect. This paper explains why. Jordan and the incident are invented; the research is real.

Sensation and Perception

Psychologists distinguish two steps in how we experience the world. Sensation is the detection of physical energy, such as light or sound, by sense organs and its conversion into neural signals. Perception is the brain's organization and interpretation of those signals into meaningful objects and events. Light reflected from the car certainly reached Jordan's eyes; the sensory system did its job. What failed was perception, and the reason lies in attention.

Attention as a Bottleneck

The brain receives far more sensory information than it can process fully. Attention selects some of it for deeper processing and leaves the rest largely unprocessed. Selective attention is efficient: it lets us follow a conversation in a noisy room or read in a busy café. But it means that what we do not attend to may never reach conscious awareness, even when it is directly in front of us. Consciousness, in this sense, is not a camera recording everything in view but a spotlight that illuminates a small part of it.

The Gorilla in the Game

Simons and Chabris (1999) demonstrated how dramatic this effect can be. Observers watched a short video of two teams passing basketballs and were asked to count the passes made by one team. Partway through, a person in a gorilla suit, or in another version a woman with an umbrella, walked through the scene. Overall, nearly half the observers failed to notice the unexpected event. When the counting task was harder, more people missed it. Simons and Chabris called the phenomenon sustained inattentional blindness: failing to see something fully visible because attention is engaged elsewhere.

The study shows that people's confidence about what they would notice is often misplaced. Most observers, told about the gorilla afterward, insisted they would have seen it, and some asked to watch the video again because they could not believe they had missed it.

Talking While Driving

Strayer and Johnston (2001) applied similar questions to driving. In simulated driving tasks, participants who were talking on a cell phone missed more traffic signals and reacted more slowly to those they did detect than when they were not on the phone. Crucially, the impairment occurred whether participants used a handheld or a hands-free phone, while listening to the radio or to a recorded book did not produce the same impairment. The demanding part of a phone call, the researchers concluded, is the conversation itself, which draws attention away from the road.

The Unicycling Clown

Hyman et al. (2010) took the question to a campus square. In one study, they observed pedestrians crossing the square and asked them whether they had seen anything unusual; in another, a clown in a bright costume rode a unicycle near the walkers' path. Pedestrians talking on cell phones were much less likely to notice the clown than people walking alone, walking in pairs or listening to music. Phone users also walked more slowly, changed direction more often and were less likely to acknowledge other people. The findings showed that the same attentional limits affect people on foot.

What the Studies Show Together

Back to the Crosswalk

Jordan's experience fits every part of this research. Typing a message and thinking about the reply occupied attention much as counting passes did for Simons and Chabris's observers. The car was in Jordan's visual field, but it was not selected for processing, so it never reached awareness. Jordan's certainty about looking at the street reflects the same overconfidence the gorilla studies revealed: people believe they see what is in front of them because they do not notice what they miss.

Why People Underestimate the Risk

Part of what makes phone use while walking or driving dangerous is that people cannot easily detect their own inattention. Missing something leaves no trace in experience; there is no feeling of having missed it. Jordan noticed the car only because the driver honked. Without that signal, Jordan would have reached the other curb believing the street had been clear. Each uneventful crossing while texting therefore teaches the wrong lesson, reinforcing the belief that multitasking is safe. This is why research findings matter more here than personal experience, which systematically hides the failures of attention that the studies reveal.

Practical Steps

The research supports several steps. Pedestrians can stop using a phone at the curb and resume after crossing, since even a brief message draws attention away from traffic. Drivers should treat hands-free calls as distracting, because the conversation, not the device, causes the impairment. Campuses can place reminders at busy crossings, and anyone who feels confident they would notice a hazard while on a phone should remember that most of the gorilla observers felt the same way.

Conclusion

Jordan looked at the street but did not see the car because perception depends on attention, and attention was on the phone. Simons and Chabris showed how often people miss what is in plain view, Strayer and Johnston showed that phone conversation impairs drivers regardless of hands-free devices and Hyman and colleagues showed the same effect in pedestrians. Understanding the difference between sensation and perception is not only a classroom distinction; at a crosswalk it can be a matter of safety.

References

Hyman, I. E., Jr., Boss, S. M., Wise, B. M., McKenzie, K. E., & Caggiano, J. M. (2010). Did you see the unicycling clown? Inattentional blindness while walking and talking on a cell phone. Applied Cognitive Psychology, 24(5), 597-607. https://doi.org/10.1002/acp.1638

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

Strayer, D. L., & Johnston, W. A. (2001). Driven to distraction: Dual-task studies of simulated driving and conversing on a cellular telephone. Psychological Science, 12(6), 462-466. https://doi.org/10.1111/1467-9280.00386