Kevin Kim 🇻🇳 | Research

Regression Models in UX Research - Cheatsheet for Practitioners

2025-12-29T11:00:45+00:00

Key Decision Flowchart for UX Researchers

1. Identify your outcome variable.

Outcome	Recommended model
Binary	Logistic Regression
Ordered categories	Ordinal Regression
Unordered categories (>2)	Multinomial Regression
Counts	Check for overdispersion → Negative Binomial
Proportion (0–1)	Beta Regression
Continuous	Proceed to step 2

2. Examine your data structure.

Data issue	Recommendation
Repeated measures / clustered data	Use mixed‑effects (multilevel) version of the chosen model (random intercepts/slopes)
Time‑based observations	Use time‑series or temporal models (ARIMA, state‑space, or models with time terms)
Many zeros	Consider zero‑inflated or hurdle models (ZIP/ZINB, ZINegBin)
Outliers / skewed distributions	Apply transformations or use robust or quantile regression

3. Define your analytical goal.

Analytical goal	Recommendation
Explain drivers	Use interpretable models (Linear, Logistic, etc.)
Predict accurately	Consider regularized or machine‑learning models (Lasso, GAMs, Boosting)
Inform design decisions	Prioritize models with communicable outputs (odds ratios, probabilities)

Regression Models Cheatsheet in UX Research

Image created by Gemini 3

Refferences

Acceptance theories

2024-08-29T11:59:45+00:00

Acceptance Research

From 2 view sociology and psychology:

Diffusion Theory
Theory of Planned Behaviour
Technology Acceptance Model
Unified Theory
Resistance Model
Fogg Behaviour Model
Nudge Theory Process

Diffusion Theory

The diffusion of innovations theory is a hypothesis outlining how new technological and other advancements spread throughout societies and cultures, from introduction to widespread adoption. The diffusion of innovations theory seeks to explain how and why new ideas and practices are adopted, including why the adoption of new ideas can be spread out over long periods.

Modified from Crossing the Chasm, by Geoffrey A. Moore. ©Todreamalife, 2022

Reference: https://www.investopedia.com/terms/d/diffusion-of-innovations-theory.asp

Theory of Planned Behaviour

The Theory of Planned Behavior (TPB) aka Theory of Reasoned Action was developed by Icek Ajzen as an attempt to predict human behavior (Ajzen, 1991). The TPB posits that attitude toward the behavior, subjective norm, and perceived behavioral control influence behavioral intention.

Reference: Theory of Planned Behavior

Technology Acceptance Model

Developed by Fred D. Davis in 1989. Extension of the Theory of Reasoned Action (Ajzen & Fishbein 1980). Predicts individual adoption and use of new technologies in a work context Intention to use new technology is based on 2 factors: perceived usefulness and perceived ease of use.

Reference: Technology Acceptance Model

Unified Theory

The unified theory of acceptance and use of technology (UTAUT) is a technology acceptance model formulated by Venkatesh and others in “User acceptance of information technology: Toward a unified view”.

Reference:

Field of Application:

Use of various technologies within an organization (UTAUT 1): focus on Expectation of performance, Expectation of effort, Social influence, Facilitating conditions
Use of various technologies within the consumer market (UTAUT 2): focus on Hedonic motivation, Price value, Habit

Resistance Model

Developed by MacVaugh and Schiavone in 2010

Reference: https://www.researchgate.net/figure/An-integrative-model-of-factors-limiting-innovation-adoption_fig1_233680684

Fogg Behaviour Model

The Fogg Behavior Model shows that three elements must converge at the same moment for a behavior to occur: Motivation, Ability, and a Prompt/Trigger.

B = MAP or MAT

Reference: https://behaviormodel.org/

Nudge Theory Process

American academics Richard H. Thaler and Cass R. Sunstein are primarily credited with developing the nudge theory. They based a significant portion of their theory on research on “heuristics” conducted by Israeli-American psychologists Daniel Kahneman and Amos Tversky, which first appeared in psychological journals in the 1970s.

Some examples of common nudges include:

Default Options: Automatically enrolling individuals in beneficial programs (e.g., retirement plans) with the option to opt out, increasing participation rates.
Social Norms: Informing people about the behaviors of others, such as telling them that most of their peers recycle, to encourage similar behavior.
Simplification: Reducing the complexity of forms or processes to make it easier for people to take action, such as simplifying tax filing processes.
Framing: Presenting information in a way that highlights the positive aspects, such as stating “90% fat-free” instead of “10% fat.”
Reminders: Sending timely prompts or alerts to encourage people to take action, like a text message reminding someone to exercise.
Feedback: Providing individuals with immediate feedback on their actions, such as showing energy usage compared to neighbors to encourage conservation.
Anchoring: Using initial pieces of information as a reference point to influence decisions, like suggesting a starting amount for donations.
Commitment Devices: Encouraging people to make commitments to future actions, such as pledging to quit smoking by a certain date.
Salience: Making key information stand out to capture attention, such as highlighting deadlines or important details in bold or bright colors.
Priming: Exposing people to certain stimuli to influence their subsequent behavior, like playing slow music in a store to encourage more browsing and buying.

Reference: https://thedecisionlab.com/reference-guide/psychology/nudge-theory

Product and UX Designers Competencies

2023-12-14T09:45:45+00:00

BuzzFeed

Levels Individual contributors: Associate, Mid, Senior, Staff, Principal. Managers: Manager, Senior Manager, Director, Senior Director.

Competencies Design, Tools and Process, Product Thinking, Transparency, Communication, Mentorship, Culture, Recruiting (for managers), Design Operations (for managers)

Open BuzzFeed design matrix on GitHub

Unacademy: Design Org

Levels Individual contributors: Product Designer, Senior, Lead, Principal Managers: Manager, Senior Manager

Competencies Hard skills: Problem definition + Scoping + Research, Holistic UX, Explorations + Final recommendation, UI & Visual design + Delivery. Soft skills: Initiative, Guardianship, Citizenship, Mentorship + Managing.

Unacademy design matrix

Figma: Product Design Ladder

Levels Individual contributors: Levels 1-6.

Competencies Product Strategy, Craft + Quality. Communication + Collaboration, Action + Impact, Leveling up others, Independence, Community

Figma product design ladder

Intercom: Product Designer Job Levels

Levels Individual contributors: Associate, Mid-Level, Senior, Staff, Principal, and Senior Principal Managers: Group Design Manager, Senior Group, and Design Manager

Competencies Key Differences, Strategy, Execution, and Behaviors Leadership, People Management, Business Strategy, Product Strategy & Vision, and Execution & Impact

Intercom design matrix on Google Docs

GitLab: Product Design Roles and Responsibilities

Levels Individual contributors: Product Designer, Senior Product Designer, Staff Product Designer, and Principal Product Designer Managers: Product Design Manager, Senior Manager, Director, and Vice President of UX

Competencies Responsibilities, Requirements, and Interview Process

GitLab design competencies

Methodologies

Conversational Design for Digital Product

2023-12-14T09:45:45+00:00

Grice’s Maxims: Cooperative Principle

Principle	Description
Quantity	Just enough information - Make your contribution as informative as is required (for the current purposes of the exchange). - Do not make your contribution more informative than is required.
Quality	Be truthful - Do not say what you believe to be false. - Do not say that for which you lack adequate evidence.
Relation	Be relevant - Say things that are pertinent to the discussion.
Manner	Be brief, orderly, and unambiguous - Avoid obscurity of expression. - Don’t be ambiguous. - Avoid unnecessary prolixity.
Be polite	Be considerate - Don’t impose. - Give options. - Make the listener feel good.

Mobile Human Computer Interaction

Human-to-Human interaction

Human-to-Computer interaction

How it works:

Mobile HCI: Most interactions on mobile app related to Vision (exclude Sound and Haptic)

Design principles

🧠 How might we reduce cognitive load for our customers?
🐎 How might we take simple and short actions for our customers?
🌏 How might we create real artifacts for our customers?
👁️ How might we create beautiful aesthetics for our customers?

4 Dimensions of Tone of Voice

A product’s tone of voice communicates how an organization feels about its message. The tone of any piece of content can be analyzed along 4 dimensions: humor, formality, respectfulness, and enthusiasm.

4 dimensions of Tone of Voice. Source

Tone spectrum

The right tone depends on a user’s contextual needs and corresponding emotions for that experience, as well as how involved and emotional we need to be in the process.

Tone spectrum. Source

Design Thinking Toolkits

2023-12-13T09:45:45+00:00

MURAL templates for Enterprise Design Thinking exercises

Use the following MURAL templates as you conduct Enterprise Design Thinking exercises.

Cognitive Bias

2023-12-13T09:45:45+00:00

Top 50 Cognitive Biases

50 Cognitive Biases in the Modern World

See more at: https://stuffunseen.com/the-cognitive-bias-codex/

Biased by design

Mid Journey AI prompts

2023-12-05T09:45:45+00:00

MJ Overview

tbd

Understand tool

tbd

Practice

tbd

Other sources of prompts

Design Library 📗

2023-05-12T09:45:45+00:00

Behaviour Science & Psychology

Usability

Five-Second Testing: Taking A Closer Look At First Impressions - Eduard Kuric

Ethical Design

Learning UX + UI Design

Design practices

Inspirations

Design Systems

Speed up for Figma

UX Testing & Research Tools

Others

Toools.design