Which principle of HCI emphasizes that interfaces should minimize user memory load?ConsistencyRecognition over recallFeedbackC) Recognition over recallInterfaces should allow recognition (e.g., menus) instead of requiring recall.
Fitts’ Law in HCI is used to predict:Task completion timeError ratesCPU performanceB) Task completion timeFitts’ Law models the time required to move to a target area.
Which of the following is an example of direct feedback in HCI?Progress barSilent processingHidden menusB) Progress barFeedback provides immediate system response to user actions.
Usability testing mainly focuses on:User satisfaction and ease of useSystem speedMemory consumptionB) User satisfaction and ease of useUsability testing ensures the interface is intuitive.
Which interface type is most suitable for visually impaired users?VUI (Voice User Interface)CLIAR interfaceB) VUIVoice interfaces support accessibility for visually impaired users.
Which principle focuses on designing interfaces that match real-world experiences?AffordanceNatural mappingFeedbackC) Natural mappingNatural mapping aligns digital controls with real-world expectations.
A prototype in HCI is used to:Simulate interactionDebug programsReduce costs onlyB) Simulate interactionPrototypes let designers test usability before final development.
Fitts’s Law predicts:Time to point/targetCognitive loadUsability indexB) Time to point/targetFitts’s Law models pointing time based on target size and distance.
In usability testing, a heuristic evaluation involves:User surveysPerformance logsError messagesA) Expert reviewExperts check design against usability principles (heuristics).
Which interface type uses gestures for interaction?WIMPTouch-basedBatchC) Touch-basedTouch and gesture interfaces enhance natural human-computer interaction.
Usability includes:Security, latency, speedHardware costNetwork throughputA) Learnability, efficiency, satisfactionCore usability metrics are ease of learning, efficiency, satisfaction.
Heuristic evaluation is conducted by:Expert evaluatorsRandom testersDevelopers onlyB) Expert evaluatorsExperts evaluate interfaces using usability principles.
Which design reduces memory load?Recall onlyMore icons with hidden labelsDark mode onlyA) Recognition over recallInterfaces should help users recognize, not memorize commands.
Affordance means:Cost of interactionAccessibilitySpeed of processingA) Visual design suggests usageE.g., a button looks clickable.
Hick’s Law relates to:Typing accuracyMemory recallSpeech recognitionA) Time taken to choose from multiple optionsMore choices → slower decision time.
Eye-tracking in HCI helps measure:CPU loadDatabase performanceNetwork trafficA) User attention and navigationIt identifies where users look on screens.
Accessibility design ensures:Faster software onlyCheaper developmentMore advertisementsA) Usability for people with disabilitiesAccessibility provides equal access for all.
Which principle suggests minimizing user memory load?Recall over recognitionComplexity maximizationError tolerance onlyA) Recognition over recallMenus/icons should support recognition.
Affordances in UI design indicate:Security level) Memory consumptionCode readabilityA) How an element should be usedExample: A slider visually suggests sliding.
Fitts’s law predicts:Time to acquire a target based on size and distanceUser satisfaction scoreScreen resolution requirementsB) Time to acquire a target based on size and distanceLarger/closer targets are faster to select.
Affordance in HCI means:Usability of design elements based on perceived functionAccessibility complianceTask automationB) Usability of design elements based on perceived functionExample: a button that “looks clickable.”
Nielsen’s heuristics are guidelines for:Usability evaluationSecurity auditsCompiler designB) Usability evaluationThey provide design principles for usable interfaces.
Eye-tracking studies are used in HCI to measure:User attention and interaction patternsMemory usageError handlingB) User attention and interaction patternsShows where users focus while interacting.
The main goal of HCI is:Enhancing user experienceReducing screen sizeMaximizing code speedB) Enhancing user experienceHCI focuses on making systems more usable and accessible.
A “persona” in HCI represents:Hypothetical user profileSystem logInterface layoutB) Hypothetical user profilePersonas model user behavior and needs.
Fitts’s Law predicts:User satisfactionColor contrastSystem reliabilityA) Task completion time based on distance and target sizeIt quantifies human movement efficiency.
Heuristic evaluation is performed by:Expert usability evaluatorsEnd users onlyHardware engineersB) Expert usability evaluatorsExperts review UI using usability principles.
Affordance in UI design means:Data encryptionSystem responseMemory allocationA) What actions a user can perceive possibleAffordance guides users on how to interact with elements.
Usability focuses on:Ease of useCostNetwork speedB) Ease of useHCI ensures user satisfaction and efficiency.
Eye-tracking is mainly used to:Analyze user attentionDetect emotions Adjust screen sizeB) Analyze user attentionIt reveals where users focus visually.
What does Fitts’s Law relate to?Screen size Cognitive loadFont legibilityA) Motion speed and accuracyFitts’s Law models the time needed to move to a target area.
What is a wireframe?Database diagramVisual layout prototypeStyle guideC) Visual layout prototypeWireframes represent basic structure of a user interface.
Which principle supports user memory in interfaces?RedundancyComplexityRandomnessA) ConsistencyConsistent layouts help users predict system behavior easily.
What does “affordance” mean in UI design?Suggested possible actionsUser error rateFeedback loopB) Suggested possible actionsVisual elements imply how they can be used (e.g., buttons invite clicks).
What is usability testing?Measuring user performance and satisfactionCode debugging Database validationB) Measuring user performance and satisfactionEvaluates how effectively users interact with a design.
The primary goal of HCI is:User-friendly interactionAlgorithm efficiencyData storageB) User-friendly interactionHCI optimizes usability between humans and systems.
Usability testing focuses on:Measuring ease of useSystem speedError logsB) Measuring ease of useUsability tests assess how intuitively users interact with interfaces.
Which design principle emphasizes user control?FeedbackFlexibilityEfficiencyC) FlexibilityFlexibility allows users to perform actions in various ways.
Which principle focuses on giving clear feedback to users?VisibilityFeedbackControlC) FeedbackFeedback helps users understand the system’s response.
The color red in UI design usually represents:Error or alertNeutralSelectionB) Error or alertColor psychology helps users interpret actions quickly.
Usability testing measures:User satisfaction and efficiency Screen resolutionColor qualityB) User satisfaction and efficiencyIt checks how easily users can interact with a system.
Fitts’s Law relates to:Movement time and distance Color perception Memory recallB) Movement time and distanceIt predicts the time required to move to a target area.
Accessibility design focuses on:CostInclusive usability for all UI animationC) Inclusive usability for allAccessibility ensures software can be used by people with disabilities.
What is the main goal of HCI design?Improve user experienceEnhance AI performanceIncrease code complexityB) Improve user experienceHCI focuses on creating systems that are efficient, intuitive, and satisfying for users.
Which of the following best describes “affordance”?Cue for possible actionsAccessibility issueFeedback errorB) Cue for possible actionsAffordance is a design clue that suggests how an object should be used.
What does usability testing evaluate?User satisfaction and ease of useSystem securityNetwork speedB) User satisfaction and ease of useUsability testing assesses how easily and efficiently users can achieve goals in a system.
Which principle supports reducing user memory load?MinimalismFlexibilityNone of theseD)None of theseInterfaces should display relevant information so users don’t have to remember details.
Which design principle emphasizes maintaining a uniform layout and terminology?AestheticsAffordanceAccessibilityA) ConsistencyConsistent interfaces make interactions predictable and reduce learning effort.
Which principle emphasizes user control and freedom?FlexibilityFeedbackUndo/RedoD) Undo/RedoGiving users the ability to undo actions prevents frustration and errors.
Which color scheme helps color-blind users?Monochromatic Blue-yellowMulticolor gradientC) Blue-yellowBlue-yellow schemes are more distinguishable for most color-blind users.
The main goal of HCI is to:Make systems user-friendly Enhance processing speedIncrease costB) Make systems user-friendlyHCI focuses on designing interfaces that improve user experience.
What is a heuristic evaluation?Expert usability inspectionA/B testingField surveyB) Expert usability inspectionExperts review interfaces using established usability principles.
Which law relates response time to user satisfaction?Hick’s LawMurphy’s LawNielsen’s LawB) Hick’s LawIt states that decision time increases with the number of choices.
What does “affordance” mean in design?The perceived function of an objectUser motivationCode readabilityB) The perceived function of an objectAffordance helps users intuitively understand how to use an element.
Usability testing focuses on:User experienceSecurity flawsHardware speedB) User experienceIt evaluates how easily and effectively users interact with a system.
Cognitive load refers to:User’s mental effortNetwork delayPage loadingB) User’s mental effortHCI aims to reduce cognitive load for smoother user interaction.
Gestalt principles are used to:Improve visual grouping Manage data Animate iconsB) Improve visual groupingThey explain how humans perceive visual elements as unified wholes.
Affordance in UI means:Visual cues suggesting actionLayout patternInput validationB) Visual cues suggesting actionAffordance shows users what actions are possible through design cues.
Heuristic evaluation is done by:Expert evaluators Beta testersDevelopersB) Expert evaluatorsExperts inspect usability based on established heuristics.
The main goal of HCI is to:Design user-friendly interfaces Reduce costsAdd visual effectsB) Design user-friendly interfacesHCI focuses on improving usability and interaction between users and computers.
Fitts’s Law relates to:Movement time vs. target sizeVoice recognitionData miningB) Movement time vs. target sizeIt predicts how quickly a user can move to a target area.
The concept of affordance in HCI means:Possible user actions with an object Data storageAnimation effectsB) Possible user actions with an objectAffordance suggests how an element should be used by its design.
Which is a user-centered design principle?Involve users throughout developmentLimit feedbackPrioritize developer needsB) Involve users throughout developmentUser feedback ensures the product aligns with real-world usage.
