A map of tools, essays, and ideas on LifeByLogic.
A curated hub for browsing the publication: the five labs below, a selection of tools, featured essays and foundational glossary terms, organized for finding. Every tool is listed on the Tools page.
Last reviewed
Five volumes of an examined life. Each lab is a curated collection of tools for one dimension of self-understanding.
Neuroscience-backed cognitive tools
Free tests for brain age, memory, sleep, cognitive reserve, and adult ADHD and autism traits. Each draws on published research and documents its limits.
Decision support for life's biggest forks
Career decision tools: whether to quit your job, whether to change careers, which work interests you and how you work best. Not advice.
Cognitive bias and behavioral science
Tests for cognitive bias, personality, anxiety, procrastination, impostor feelings and overthinking, each naming the research it draws on.
Wellbeing self-reflection and flourishing metrics
Self-reflection tools for flourishing, meaning, attachment, depression, stress and burnout, and loneliness. Educational, not diagnostic.
Child development and parenting
Research-informed tools for parents on routines, temperament, screen balance, strengths, milestones and parent-child connection. The temperament profile draws on Thomas and Chess, Rothbart, and Kagan.
A selection of tools from four of the five labs, each free, scored in your browser and documented on its own methodology page.
Brain Age Test: Free Brain Age Index Calculator
Free brain age test that estimates the modifiable part of your brain-age gap from 25 questions in six domains, based on the 2024 Lancet…
Open tool →Flourishing Index: Your Wellbeing Across 16 Life Dimensions
A 25-question self-reflection test across 16 dimensions of a life, with a composite and an archetype.
Open tool →Personalized Bedtime Routine Builder and Sleep Calculator
Behavioral sleep assessment with personalized schedule. 12 items, computes social jet lag and a regularity estimate. Suggests bedtime,…
Open tool →Should I Quit My Job? Free Test and Stay-or-Go Simulator
Free test that scores your burnout, meaning at work and wish to leave, then simulates staying and leaving from your own…
Open tool →Cognitive Bias Test: Which Biases Catch You?
Free cognitive bias test using behavioral tasks, not self-report alone. Measures susceptibility to seven well-studied…
Open tool →Cognitive Reserve Test: Estimate Your Brain's Buffer
Free Cognitive Reserve Estimator: 6-domain evidence-weighted assessment based on Stern's framework, the CRIq, and the 2024 Lancet…
Open tool →Burnout Test: Free Stress and Burnout Assessment
Free 24-item LBL-original self-inventory measuring perceived stress and personal burnout. Two scores, four severity bands, five archetypes.…
Open tool →Chronotype Test: Are You a Morning or Evening Type?
Free 14-item biological-trait chronotype assessment grounded in 2019-2025 chronobiology research. Age-sex calibrated, continuous score with…
Open tool →A selection of 15 tools, each with its description and a direct link to its methodology. The Tools page lists all 33.
Brain Lab
Brain Age Test: Free Brain Age Index Calculator
Free brain age test that estimates the modifiable part of your brain-age gap from 25 questions in six domains, based on the 2024 Lancet Commission. An estimate, not a diagnosis.
Methodology →Personalized Bedtime Routine Builder and Sleep Calculator
Behavioral sleep assessment with personalized schedule. 12 items, computes social jet lag and a regularity estimate. Suggests bedtime, caffeine, exercise.
Methodology →Sleep Need Calculator: How Much Sleep by Age
Find out how much sleep you need by age. Free Sleep Need Calculator built on AASM and NSF consensus guidelines — with weekly sleep debt and lifespan view.
Methodology →Cognitive Reserve Test: Estimate Your Brain's Buffer
Free Cognitive Reserve Estimator: 6-domain evidence-weighted assessment based on Stern's framework, the CRIq, and the 2024 Lancet Commission. 4-6 minutes.
Methodology →Chronotype Test: Are You a Morning or Evening Type?
Free 14-item biological-trait chronotype assessment grounded in 2019-2025 chronobiology research. Age-sex calibrated, continuous score with descriptive band.
Methodology →Crossroads Lab
Behavior Lab
Life Dashboard
Flourishing Index: Your Wellbeing Across 16 Life Dimensions
A 25-question self-reflection test across 16 dimensions of a life, with a composite and an archetype.
Methodology →Attachment Style Test: Free 20-Item Assessment
Free 20-item adult attachment test grounded in 30+ years of attachment research. Four archetypes — Anchor, Tide, Island, Storm — with the science behind each.
Methodology →Depression Test — Free 9-Item Screen with Symptom Profile
Free 9-item depression screener (Kroenke 2001) with severity bands, symptom profile, archetype, and care-aware crisis support. 2 minutes, browser-local.
Methodology →Original frameworks and research deep-dives on brain, behavior, and decision science. Long-form, citation-anchored, opinionated.
17 Brain-Health Factors: 14 Lancet Risks + 3 Exploratory
And three exploratory domains beyond the Lancet list
Fourteen modifiable risk factors from the global consensus framework. Three more from emerging evidence. What the evidence shows, and what a self-report tool cannot measure.
What Is Human Flourishing? Definition, Models, and Measurement
And how to reflect on your own
Five domains, plus financial and material stability. 202,898 adults in 22 countries and territories. What the Global Flourishing Study measured, and where its early findings stop.
The Four Species of Web Content
A taxonomy for the AI era
AI is not killing the web. It's killing two of the four things on it — and making the other two more valuable than ever. The framework behind LifeByLogic.
Defined terms across neuroscience, behavioral economics, and decision science. The most foundational entries are below; the full glossary holds 60+ terms.
About the publication, the editorial methodology, and the fine print.
Looking for the machine-readable sitemap? It lives at /sitemap.xml, in the standard sitemaps.org 0.9 format.