Divided Attention
Divided Attention - Related Videos
05:36
Central and Divided Visual Field Presentation of Emotional Images to Measure Hemispheric Differences in Motivated Attention
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2017
This study compared central versus divided visual field presentations of emotional images to assess differences in motivated attention between the two hemispheres. The late positive potential (LPP) was recorded using electroencephalography (EEG) and event-related potentials (ERPs) methodologies to assess motivated attention.
08:52
The Attentional Blink
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2023
Source: Laboratory of Jonathan Flombaum—Johns Hopkins University In order for recognition of a certain stimulus to take place, visual attention needs to be directed towards said stimulus. To the earliest parts of the visual system, objects are not objects, they are collections of visual features-lines, corners, changes in texture, color, and light. Attention is the resource that is necessary for later processing in order to recognize what a given bundle of features adds up to. This makes...
09:37
Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control
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Cited by 5 •
2015
Attention control comprises enhancement of target signals and attenuation of distractor signals. We describe an approach to measure separately but concurrently, the neurophysiology of attending and ignoring in sustained intermodal attention, utilizing a passive control condition during which neither process is continuously engaged.
09:59
Visual Attention: fMRI Investigation of Object-based Attentional Control
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2023
Source: Laboratories of Jonas T. Kaplan and Sarah I. Gimbel— University of Southern California The human visual system is incredibly sophisticated and capable of processing large amounts of information very quickly. However, the brain's capacity to process information is not an unlimited resource. Attention, the ability to selectively process information that is relevant to current goals and to ignore information that is not, is therefore an essential part of visual perception. Some aspects of...
01:14
Voltage Dividers
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2024
In electrical circuits, resistors can be connected in series, sequentially linked one after the other. In a series configuration, the same current flows through each resistor. Ohm's law is a fundamental principle to understand the behavior of resistors in series. It expresses the voltage across these resistors in terms of the current and resistance. Kirchhoff's voltage law implies that the sum of the voltages across the resistors in series equals the source voltage. This means that the current...
FAQs
Limited cognitive capacity makes it difficult to process competing tasks with equal efficiency. When concurrent demands draw on the same resources, performance may decline through reduced accuracy, slower responses, or both. The extent of this effect depends on how strongly the tasks compete and whether the person must prioritize one source of information over another.
Rapid switching allows attention to move between tasks, but it can interrupt continuous processing of each activity. Each shift may require the person to reorient toward a different task or information source, increasing the possibility of missed details and delayed responses. This mechanism helps explain why apparent multitasking may produce less efficient performance.
Selective prioritization helps a person allocate more attention to information judged important when available resources cannot fully support every task. Prioritization can preserve performance on a central activity while reducing attention to competing information. Psychologists examine this process because it connects divided attention with distraction, task demands, and decisions about which information receives processing.
Divided attention may require either switching between tasks or combining information from multiple sources. Integration places emphasis on using those sources together, whereas switching alternates processing between them. This distinction matters because researchers can examine whether performance changes arise from competition between separate activities or from the cognitive demands of coordinating information during concurrent performance.
Psychologists commonly use dual-task experiments in which participants perform two activities simultaneously. Researchers compare performance under concurrent-task conditions with relevant performance measures, focusing on changes such as accuracy and response speed. These comparisons show how adding a second demand alters task performance and provide evidence about the limits and organization of attention.
The main outcomes are changes in accuracy and response speed when tasks are performed together. A decline in either measure can indicate that concurrent demands are competing for limited cognitive resources. Examining these performance changes helps researchers evaluate how people manage multiple information sources and how strongly distraction affects task execution.
Findings inform the study of multitasking, driving behavior, learning, and workplace performance. They also contribute to the design of safer and more effective environments by showing how competing information can affect accuracy and response speed. In these settings, the research provides a psychological basis for considering distraction and the demands placed on attention.
Divided attention provides a way to test claims about how cognitive resources are distributed, prioritized, and coordinated. Dual-task performance reveals what happens when demands compete, including losses in accuracy or slower responses. These findings help psychologists refine theories of limited attention while connecting laboratory results to practical problems involving distraction and concurrent activities.