Critical Reasoning

Critical Reasoning

EdTech

PoC

In January 2025, I joined the Critical Reasoning project to design a mobile PoC focused on structured, repeatable critical thinking practice.

My mission was to transform abstract academic theory into an addictive daily habit. My goal was to repackage heavy logic concepts into a bite-sized mobile experience that turns passive study into active muscle memory.

Research, UI/UX Design, Prototyping

Product Designer

4 weeks

About Product

Core hypothesis

Critical Reasoning is designed to build a real cognitive skill, not to explain one.

This skill cannot be learned by reading about biases. It is developed through repeated practice in decision-making situations.

What makes the product different

Instead of delivering theory first, the product treats critical thinking as a trainable muscle.

Users don’t just learn what cognitive biases are, they practice how to notice and handle them in context.

Target segments

Segment

Why they come

Why they stay

Professionals who make high-stakes decisions

Performance

Confidence & mastery

Students and early-career candidates preparing for interviews

Outcomes (exam / job)

Validating Feedback Loops

Self-improvement users seeking cognitive growth

Curiosity

Continuous Self-Optimisation

Common need

Think more clearly in complex situations

Common obstacle

Knowing theory doesn’t change behavior

Common driver

Feeling noticeable progress

segment

why they come

Why they stay

Professionals who make high-stakes decisions

Performance

Confidence & mastery

Students and early-career candidates preparing for interviews

Outcomes (exam / job)

Validating Feedback Loops

Self-improvement users seeking cognitive growth

Curiosity

Continuous Self-Optimisation

Common need

Think more clearly in complex situations

Common obstacle

Knowing theory doesn’t change behavior

Common driver

Feeling noticeable progress

How users solve this problem today

Books & Articles

theory with no practice

Online Courses

one-directional learning

Learn from mistakes

expensive & slow

product value

Critical Reasoning focuses on practice. Short, repeatable cognitive exercises that turn abstract theory into an actionable habit.

Critical Reasoning focuses on practice with short, repeatable cognitive exercises that turn abstract theory into an actionable habit.

Ultimately, the product helps users master the skill rather than just understand the theory.

As a result, the product doesn’t deliver knowledge but builds a skill.

Research

Framing the problem

Framing the problem

Since the core value of the product is skill-building, I first reframed the product task. A skill is not knowledge. A skill is formed through repetition.

Skill = Repetitive Actions = Habbit

This made it clear that for users to actually develop critical thinking, the product must build a learning habit, not just deliver content.

Once this was defined, the direction of my research became obvious:

I needed to understand how other products successfully build learning habits, and why some fail to do so.

Research goal

Research goal

My goal was to understand how different products form a learning habit:

  • what minimal actions they use for daily practice

  • which mechanics motivate users to return

  • how they balance theory and practice

  • how they lower the barrier to taking action

High-engagement apps

High-engagement apps

App

App

Why engagement is high

Why engagement is high

Key mechanics

Key mechanics

Duolingo

Daily active use, strong habit formation

✓ Streak freeze & protection

✓ Variable Rewards

✓ Micro-actions

Kahoot

High excitement, group engagement

✓ Time Scarcity

✓ Leaderboards

✓ Synchronous play

Brilliant

High engagement for difficult content

✓ Interactive "Do-first"

✓ Scaffolding

✓ Instant validation

Low-engagement apps

Low-engagement apps

App

App

Why engagement is high

Why engagement is kow

Friction Points

Friction Points

LinkedIn Learning

LinkedIn
Learning

Users rarely return daily

✗ Long-form video

✗ Delayed feedback

✗ No trigger

Coursera / Udemy

Coursera
Udemy

Users drop off after first modules

✗ Heavy Theory

✗ Deferred Reward

✗ Isolation

Books / Articles

Books
Articles

Good content, low stickiness

✗ No Interactive Feedback

✗ Linear structure

✗ Zero external triggers

Key takeaways

Key takeaways

Based on this research, I defined several core principles that shaped the product design:

"Do-First" interaction model

The very first screen of a session must always be a question, a challenge, or a case study.

Atomic content & scaffolding

To reduce a cognitive load, complex critical thinking concepts must be atomised. One Screen = One Concept / One Action.

Tight feedback loops

User must receive a dopamine hit the exact second they tap a button.

Visible mastery & streaks

Since critical reasoning is an abstract skill, the interface must make it tangible. Progress should be visible at all times. Users need to see their strength accumulating.

Scaffolding

The Audit

I started with a dense spreadsheet of theory. It was accurate, but purely passive. I realised this format was a retention killer: high cognitive load, zero dopamine, and it felt exactly like homework.

To build a habit, I had to destroy the homework vibe.

Step 1: Atomisation

First, I slashed the cognitive load. I broke the massive "wall of text" into atomic cards.

one screen = one concept

one screen = one concept

one screen = one concept

Theory

Theory

Theory

Theory

Theory

Theory

interaction

interact..

feedback

card 1

card 2

card 3

card 4

card 5

card 6

card 7

card 8

But structure wasn't enough, swiping through text cards was still just passive reading.

Step 2: Activation

I flipped the script and replaced consumption with action.

interaction

interaction

feedback

feedback

Theory

Theory

interaction

interaction

feedback

fB

Theory

Theory

interaction

int.

Theory

Theory

interaction

interaction

feedback

feedback

card 1/side 1

card 1/side 2

card 2

card 2/side 1

card 2/side 2

card 3

card 4

card 5

Instead of explaining a concept and then testing it, I force the user to solve a micro-case first. So user doesn't study the theory and can unlock it by playing.

card-level decision

#1 Action-First Context

Problem

I originally started with two cards of pure theory followed by a "Got it" button.

This flow was too passive: users were just scanning the text without processing it. It was a retention killer.

Solution

I inverted the flow. I stripped away the explanation and forced the user to face the situation immediately.

Action first → Explanation later.

Now, the user must commit to a decision first. The card flips to reveal the logic only after the choice.

It’s not a test, there’s no wrong grade. It’s an earned insight. Because the user struggled for a second, the answer lands harder and sticks longer.

#2 Active Discovery

Problem

I originally placed three theory cards in a row. This created a zombie loop: tap-tap-tap without reading.

Even when I atomised the text, the passive structure would bored the user before they learned anything.

Solution

I turned the theory into a game mechanic. Now, the user has to mine the information.

Question → Answer = Interaction → Feedback

For complex examples, I used flip cards. Instead of staring at a static list of facts, the user has to physically interact to reveal them

This prevents detachment. Active hands keep the brain engaged in the process.

#3 Value Visualisation

Problem

A generic "Task Complete" screen with stars felt empty.

It didn't answer the user's main question: "Did I actually get smarter just now?" It failed to show the real value of the session.

->

->

->

->

->

->

Solution

#1

Clarified the CTA message "Continue to next skill," to remove decision fatigue and encourage the user to keep the streak alive.

#2

I renamed "Task Complete" to "Skill Unlocked." This frames the session as a permanent power acquired.

#3

Added a progress counter (1/5) and XP rewards.

This shows the user they are on a journey toward mastery, not just doing random tasks.

#4

Replaced abstract stars with a checklist and mapped the lesson to real-world abilities, making the progress feel physical

Solution

#1

Clarified the CTA message "Continue to next skill," to remove decision fatigue and encourage the user to keep the streak alive.

Clarified the CTA message "Continue to next skill,"to remove decision fatigue and encourage the user to keep the streak alive.

#2

I renamed "Task Complete" to "Skill Unlocked." This frames the session as a permanent power acquired.

#3

Added a progress counter (1/5) and XP rewards.

This shows the user they are on a journey toward mastery, not just doing random tasks.

#4

Replaced abstract stars with a checklist and mapped the lesson to real-world abilities, making the progress feel physical

Design Validation

This redesign validated my core research principle: "Do-First" interaction.

By enforcing a tight Interaction → Feedback loop, I fundamentally changed the user's role. Instead of being spoon-fed theory, the user now has to mine the insights through decision-making.

This friction creates a sense of ownership. We remember what we solve far better than what we simply read. The content didn't change, but the experience transformed from a linear lecture into a turn-based game, keeping the user constantly engaged.

Final Design

dashboard

HABIT FORMATION

dashboard

Habit Formation

I designed the dashboard to prioritise action over consumption. Instead of overwhelming the user with theory, the interface serves as an interactive roadmap, breaking down complex skills into bite-sized, manageable tasks to encourage daily practice.

#1 Daily Streak

I placed the streak counter front and center. This leverages loss aversion: users return daily not just to learn, but to protect their chain.

The immediate visual feedback (filling the green bar) provides a micro-dose of dopamine after every completed step.

#2 The Narrative Guide

Logic and critical reasoning can feel cold and intimidating. To lower this barrier, I introduced a friendly, round navigator.

The soft shapes and supportive tone make the app feel safe and forgiving.

The speech bubble acts as a GPS, instantly telling the user exactly what to do next. It frames the hard cognitive work as a playful investigation.

#3 Active Skill Card

A long list of "to-dos" causes analysis paralysis.

I used Progressive Disclosure to fix this. The active card hides the mountain of future work, showing only the immediate task.

The "0/5" ring promises a short, finishable session, and the single CTA removes the burden of choice. You don't decide; you just click.

#4 Locked Skill Card

I didn't hide future levels completely, I locked them.

Visible but inaccessible levels create a curiosity gap.Seeing a locked title makes the user want to unlock it.

This turns the educational process into a game of achievements and ensures they master the basics before jumping ahead.

#1 Daily Streak

I placed the streak counter front and center. This leverages loss aversion: users return daily not just to learn, but to protect their chain.

The immediate visual feedback (filling the green bar) provides a micro-dose of dopamine after every completed step.

#2 The Narrative Guide

Logic and critical reasoning can feel cold and intimidating. To lower this barrier, I introduced a friendly, round navigator.

The soft shapes and supportive tone make the app feel safe and forgiving.

The speech bubble acts as a GPS, instantly telling the user exactly what to do next. It frames the hard cognitive work as a playful investigation.

#3 Active Skill Card

A long list of "to-dos" causes analysis paralysis.

I used Progressive Disclosure to fix this. The active card hides the mountain of future work, showing only the immediate task.

The "0/5" ring promises a short, finishable session, and the single CTA removes the burden of choice. You don't decide; you just click.

#4 Locked Skill Card

I didn't hide future levels completely, I locked them.

Visible but inaccessible levels create a curiosity gap.Seeing a locked title makes the user want to unlock it.

This turns the educational process into a game of achievements and ensures they master the basics before jumping ahead.

The "Workout" Flow

The "Workout" Flow

#1 Seamless Discovery

For the hook questions, I removed the pressure of testing.

Incorrect answers don't scream "Error." A subtle color shift gently signals the miss, while the correct answer immediately expands into an explanation.

I designed this micro-interaction to feel like a single mental beat. By eliminating the lag between action and insight, the user perceives it not as a test, but as an instant discovery. This makes the learning curve feel significantly lighter.

#2 Gated Investigation

Where theory was unavoidable (like comparisons), I forced active participation.

To invite this interaction without text instructions, the cards gently bounce. This playful animation acts as a non-verbal hint "Touch me!", turning a reading task into a tactile game.

I used distinct color coding to help the brain instantly separate opposing concepts before reading a single word.

#3 The Challenge

For the actual test, I raised the stakes to build ownership.

Unlike the hook, an error here has consequences. The card clearly marks the mistake and auto-resets to the start. This forces the user to pause and rethink their logic, rather than just clicking through.

To balance this friction, the victory moment is high-energy. I designed an exciting confetti animation that rewards the effort. This creates a "Peak-End" moment, leaving the user with a feeling of progress and a desire to return.

#1 Seamless Discovery

For the hook questions, I removed the pressure of testing.

Incorrect answers don't scream "Error." A subtle color shift gently signals the miss, while the correct answer immediately expands into an explanation.

I designed this micro-interaction to feel like a single mental beat. By eliminating the lag between action and insight, the user perceives it not as a test, but as an instant discovery. This makes the learning curve feel significantly lighter.

#2 Gated Investigation

Where theory was unavoidable (like comparisons), I forced active participation.

To invite this interaction without text instructions, the cards gently bounce. This playful animation acts as a non-verbal hint "Touch me!", turning a reading task into a tactile game.

I used distinct color coding to help the brain instantly separate opposing concepts before reading a single word.

#3 The Challenge

For the actual test, I raised the stakes to build ownership.

Unlike the hook, an error here has consequences. The card clearly marks the mistake and auto-resets to the start. This forces the user to pause and rethink their logic, rather than just clicking through.

To balance this friction, the victory moment is high-energy. I designed an exciting confetti animation that rewards the effort. This creates a "Peak-End" moment, leaving the user with a feeling of progress and a desire to return.

Cognitive Ergonomics

Cognitive Ergonomics

I chose a dark theme as a low-light environment to maximise mental endurance.

DEEP FOCUS

2C2C2C

GROWTH MINT

GROWTH MINT

BDFFD3

BDFFD3

A pure white screen acts like a flashlight in the user's eyes, causing fatigue. I used a Deep Focus dark grey to eliminate "visual noise" and eye strain. It creates a vacuum where the only thing that matters is the content.

DEEP FOCUS

2C2C2C

Deep Focus

Used a deep charcoal background to maximise visual comfort. This high-contrast pairing with the mint accent ensures actionable elements are instantly recognisable, while the dark canvas reduces overall visual noise.

Growth Mint

I chose a soft, unsaturated Mint as a primary colour as it’s easy on the eyes, making it suitable for daily, long-term practice.

Green naturally associates with progress. By using it for key actions, I reinforce a feeling of continuous forward momentum.

GROWTH MINT

BDFFD3

Conclusion

The Outcome

I approached this project as a challenge in behavioural engineering. My goal was to bridge the gap between knowing critical reasoning theory and actually using it.

By implementing the Do-First model, I transformed the user experience into an active training loop. Although the company later pivoted due to funding constraints, the behavioural framework established here proved that lowering the barrier to entry directly correlates with sustained user retention.

design.dubova@gmail.com

+44-7471-541-313

Find me on

LinkedIn

Elizabeth Dubova

Product designer

based in London

Contact me

design.dubova@gmail.com

Find me on

LinkedIn

Elizabeth Dubova

Product designer
based in London

Contact me

design.dubova@gmail.com