IxDF Certificate of Completion

Perception and Memory in HCI and UX

IxDF Course Certificate awarded to Ibrahim Özkan for completing the "Perception and Memory in HCI and UX" course
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The Interaction Design Foundation (IxDF) hereby certifies that the IxDF Course Certificate (ID #ee822f92-7c5a-4f08-b57c-a53e65d34758) has been conferred upon Ibrahim Özkan with a Top 10% Course Taker Distinction in formal recognition of completing evidence-based curricula taught by industry leaders, to the standards established by the IxDF Educational Codex. View Course Curriculum.

This document serves as the official record of the above credential. Third parties may reference the certificate ID to verify its authenticity. The Interaction Design Foundation maintains permanent records of all credentials issued.

Verified Competencies Demonstrated by Ibrahim Özkan

By completing this curriculum to the standards of the IxDF Educational Codex, Ibrahim Özkan has demonstrated mastery of how to:

  • Apply the interaction model and five-step goal-mapping walkthrough, including the 90-second time-out rule, to identify exactly where a design fails to give users the evidence they need to act and determine what needs to change.

  • Apply George Miller's Magical Number Seven and the Atkinson-Shiffrin multi-store model to design interfaces that work with human memory rather than against it, to reduce errors and support task completion.

  • Distinguish between sensory, short-term, and long-term memory and use that knowledge to reduce friction in user flows and support users in completing tasks accurately.

  • Account for how cross-sensory dependencies between sight, touch, and proprioception create failure points in single-channel interface designs, and propose design solutions that address them.

  • Design for users affected by illness, disability, age, stress, and fatigue, not as exceptions but as an expected part of the user population, producing interfaces that hold up across the full spectrum of human ability.

  • Evaluate color, contrast, and motion against the known limits of human visual perception, including the one-second peripheral motion threshold, to make specific, substantiated decisions about animation and notification design.

  • Use the ecological sound and earcon framework to design auditory feedback to carry meaningful information through pitch, timbre, and harmonic complexity, and evaluate when visual or auditory channels are appropriate for a given user context.

  • Identify where an interface demands recall from users when recognition would serve them better, and produce annotated learnability evidence to demonstrate where design supports new users and where it fails them.

  • Conduct an accessibility audit against WCAG perceivable guidelines to identify where a design excludes users across vision, hearing, and cognitive ability, and produce a documented checklist of what works and what fails.

  • Recognize how confabulation and memory reconstruction affect the reliability of user research data, and account for those risks when interpreting findings and making design decisions.

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Ibrahim Özkan

Ibrahim Özkan

Product Manager

München, Free State of Bavaria, Germany
  • IxDF Distinguished Scholar
    IxDF Distinguished Scholar distinction: Completed 30 IxDF Courses
  • IxDF Outstanding Learner Award
    IxDF Outstanding Learner Award distinction: Completed 15 IxDF Courses
  • IxDF Best-in-Class
    IxDF Best-in-Class distinction: Completed an IxDF Course with a score of 100%
  • IxDF Top 10% Course Taker
    IxDF Top 10% Course Taker distinction: Completed an IxDF course with a score of 90%
  • More distinctions
    +2
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IxDF Distinctions

Distinctions are conferred upon Ibrahim Özkan in formal recognition of their notable achievements and contributions, as stipulated by the IxDF Educational Codex.

IxDF Assiduous Learner Award Distinction IxDF Assiduous Learner Award
Completed 5
IxDF Courses
IxDF Best-in-Class Distinction IxDF Best-in-Class
Completed an IxDF Course
with a score of 100%
IxDF Certified Course Completer Distinction IxDF Certified Course Completer
Completed one or more
IxDF Courses.
IxDF Distinguished Scholar Distinction IxDF Distinguished Scholar
Completed 30
IxDF Courses
IxDF Outstanding Learner Award Distinction IxDF Outstanding Learner Award
Completed 15
IxDF Courses
IxDF Top 10% Course Taker Distinction IxDF Top 10% Course Taker
Completed an IxDF course
with a score of 90%
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Certificates Earned
by Ibrahim Özkan

IxDF Course Certificates are awarded to Ibrahim Özkan in formal recognition of completing evidence-based curricula taught by industry leaders, to the standards established by the IxDF Educational Codex.

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Emotional Design — How to Make Products People Will Love certificate

Emotional Design — How to Make Products People Will Love

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Gamification - How to Create Engaging User Experiences certificate

Gamification - How to Create Engaging User Experiences

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Accessibility in Practice: Build Digital Experiences Everyone Can Use certificate

Accessibility in Practice: Build Digital Experiences Everyone Can Use

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Creativity: Methods to Design Better Products and Services certificate

Creativity: Methods to Design Better Products and Services

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Personas and User Research: Design Products and Services People Need and Want certificate

Personas and User Research: Design Products and Services People Need and Want

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How to Create Intuitive Products by Imitating Physicality certificate

How to Create Intuitive Products by Imitating Physicality

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Object-Oriented UI Design: Build Interfaces Users Love certificate

Object-Oriented UI Design: Build Interfaces Users Love

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Human-Computer Interaction: The Foundations of UX Design certificate

Human-Computer Interaction: The Foundations of UX Design

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Service Design: How to Design Integrated Service Experiences certificate

Service Design: How to Design Integrated Service Experiences

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Present Like a Pro: Communication Skills to Fast-Track Your Career certificate

Present Like a Pro: Communication Skills to Fast-Track Your Career

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IxDF Membership Certificate

This IxDF Membership Certificate (ID #mc_WtV6v1S6d) has been issued to Ibrahim Özkan in formal recognition of their membership of the Interaction Design Foundation (IxDF).

The authenticity of this membership certificate can be verified on this permanent link.

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