Short answer
Prioritize stability for primary interactive elements and clearly differentiate between changes affecting core functions versus peripheral information.
- Field
- Human Factors
- Source
- PLoS ONE (2015)
- Method
- Neuroimaging (fMRI) and experimental psychology
- Evidence
- Strong effect
When users track multiple items, switching the identity of the primary target requires more attentional and cognitive processing than switching the identity of non-target items. This human factors research insight is drawn from a 2015 study published in PLoS ONE. Using Neuroimaging (fmri) and experimental psychology, researchers explored how this design variable affects real-world outcomes. The key design takeaway: Prioritize stability for primary interactive elements and clearly differentiate between changes affecting core functions versus peripheral information.
Target identity switching demands significantly more cognitive resources than distractor identity switching.
When users track multiple items, switching the identity of the primary target requires more attentional and cognitive processing than switching the identity of non-target items.
PLoS ONE · 2015
Key Findings
- 01Target-switching condition showed greater activation in the frontal eye fields (FEF) and intraparietal sulcus (IPS) compared to distractor-switching.
- 02Target-switching condition showed greater activation in FEF, IPS, and other brain regions compared to the no-switching condition.
- 03Distractor-switching condition showed greater activation in the inferior frontal gyrus (pars orbitalis) (IFG-Orb) compared to the no-switching condition.
Application
Design takeaway
Prioritize stability for primary interactive elements and clearly differentiate between changes affecting core functions versus peripheral information.
How to apply
In designing dashboards or complex data visualization tools, consider how identity changes for key metrics or elements will impact user attention and cognitive load. If a primary metric's identity (e.g., its label or unit) must change, provide clear transition states and feedback.
Project actions
- 01When designing a system where users need to track multiple items, consider how changes to those items' identities (e.g., labels, states, types) will affect user performance.
- 02If your design involves dynamic information, analyze which information is the primary focus for the user and aim to keep its core identity stable.
Method & Evidence
Variables
Strengths & Limitations
Strengths
- +Uses neuroimaging to provide objective measures of cognitive processing.
- +Clearly delineates different types of identity switching and their differential impact.
Limitations
The study used neuroimaging, which is complex. Replicating the exact cognitive processes in a design project without such tools requires careful qualitative or quantitative user testing.
Reliability & validity
The use of fMRI and a controlled experimental design suggests good internal validity. Reliability would depend on the consistency of participant performance and brain responses across trials and participants.
Think critically
How might the 'salient change' that automatically pulls attention in the distractor-switching condition be leveraged or mitigated in interface design?
Design Principles
"Minimize cognitive load during critical tracking tasks by reducing unnecessary identity shifts of primary targets."
Understanding the cognitive load associated with different types of information changes is crucial for designing user interfaces and interactive systems. This insight helps designers create workflows and information displays that minimize cognitive strain during complex tasks.
What This Means for Your Design
When you're trying to follow one specific thing that keeps changing its appearance, it's much harder on your brain than if other things around it change their appearance.
How to use in your project
- 1.Reference this study when discussing the cognitive load of dynamic interfaces or the impact of information changes on user attention and performance in your design project.
Add to My Project
Quick Cite
Paragraph starter
Research into attentional tracking indicates that switching the identity of a primary target demands significantly more cognitive resources than switching the identity of distractors. This suggests that in design practice, interfaces should be structured to minimize identity changes for critical elements to reduce user cognitive load and improve task efficiency.
Source
PLoS ONE
Brain Activation of Identity Switching in Multiple Identity Tracking Task
journal · 2015
View sourceQuestions About This Research
- What does the research say about target identity switching demands significantly more cognitive resources than distractor identity switching?
- Prioritize stability for primary interactive elements and clearly differentiate between changes affecting core functions versus peripheral information. Evidence: PLoS ONE (2015).
- Why does "Target identity switching demands significantly more cognitive resources than distractor identity switching." matter for design?
- Understanding the cognitive load associated with different types of information changes is crucial for designing user interfaces and interactive systems. This insight helps designers create workflows and information displays that minimize cognitive strain during complex tasks.
- How can designers apply this research?
- Prioritize stability for primary interactive elements and clearly differentiate between changes affecting core functions versus peripheral information.
- What were the main findings?
- Target-switching condition showed greater activation in the frontal eye fields (FEF) and intraparietal sulcus (IPS) compared to distractor-switching.. Target-switching condition showed greater activation in FEF, IPS, and other brain regions compared to the no-switching condition.. Distractor-switching condition showed greater activation in the inferior frontal gyrus (pars orbitalis) (IFG-Orb) compared to the no-switching condition.
- What research method was used?
- Neuroimaging (fMRI) and experimental psychology.
- How strong is the evidence?
- Evidence strength is rated Strong effect, based on a 2015 journal from PLoS ONE.
- What should I do differently in my next project?
- In designing dashboards or complex data visualization tools, consider how identity changes for key metrics or elements will impact user attention and cognitive load. If a primary metric's identity (e.g., its label or unit) must change, provide clear transition states and feedback.
- What are the limitations?
- The study was conducted in a controlled laboratory setting, and the specific nature of the 'identities' being switched was not detailed, which might influence generalizability.