Free Reference Handbooks — Psychology Series

The science of the mind,
made accessible.

Free, evidence-based handbooks at the intersection of clinical psychology, behavioral science, and AI. No paywalls. No fluff.

📚  Latest Release · Sport Psychology Series · Handbook No. 1

Sport Psychology
Theoretical Landscape

Nine core domains of sport psychology — arousal & anxiety, motivation, mental skills, team dynamics, injury psychology, career transitions, and more. Built for students, practitioners, coaches, and researchers.

Performance & FlowMotivation & Goals Arousal & AnxietyAttention Mental SkillsTeam Dynamics Injury PsychologyCareer Transitions Applied Practice & Ethics
Open the Handbook  → 📖 Interactive  ·  🎓 Free to share & cite
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Sport Psychology Theoretical Landscape
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Free Handbook Series

All handbooks.

Each handbook covers a discipline from first principles — origins, evidence base, key theorists, strengths & limitations, and essential reading. Structured for students and practitioners alike.

🧠 Clinical Psychology · No. 01
Theoretical Landscape
Nine major schools — origins, evidence base, key theorists, best-fit presentations, and essential reading. From Psychodynamic to Integrative.
PsychodynamicCBTThird WaveHumanisticTrauma & SomaticIntegrative
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🏋️ Sport Psychology · No. 02 New
Theoretical Landscape
Nine core domains — performance & flow, motivation, arousal & anxiety, mental skills, team dynamics, injury, career transitions, and applied ethics.
Performance & FlowMotivationMental SkillsTeam DynamicsInjury PsychologyEthics
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⚖️ Forensic Psychology · No. 03 New
Theoretical Landscape
Nine core domains — criminal behaviour, risk assessment, false confessions, eyewitness memory, insanity, victimology, rehabilitation, and expert testimony.
Criminal BehaviourRisk AssessmentFalse ConfessionsEyewitness MemoryVictimologyEthics
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From the Research Desk

Recent thinking.

Organizational Psychology

Mass Layoffs Aren't Just Economic — They Reset the Psychological Contract

Layoffs don't just remove roles. Research on psychological contract breach (Zhao et al., 2007) shows consistent declines in trust and commitment — and AI layoffs add a new signal: that individual contribution is becoming replaceable.

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Behavioral Science

Manufactured Authenticity: The Psychology Behind Performing "Real"

Carl Rogers defined authenticity as alignment between internal experience and outward expression. On digital platforms, vulnerability is timed, structured, and engagement-aware. We're not being authentic — we're learning to signal it.

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Cognitive Psychology

The Peak-End Rule: Why We "Manufacture" Authenticity on LinkedIn

Kahneman's "Remembering Self" prioritizes the most intense moment and the final moment — not the average. On LinkedIn, this creates systemic pressure to curate peaks and engineer endings.

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Digital Identity

The Performance of Professionalism: LinkedIn's Authenticity Paradox

The pressure to present an "authentic" self that is paradoxically curated and inauthentic. Research in social psychology explains how we unconsciously adapt self-presentation to perceived audience expectations.

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Louis — Founder, Harmonics Research
Founder
Louis

LSE and UC Berkeley graduate with deep experience in tech and product — including roles at Meta, Adobe, and Pandora Radio. Alongside a career building products at scale, Louis cultivated a lasting interest in the intersection of psychology, technology, and AI.

That interest traces back to the discovery of Kahneman and Tversky's work on heuristics and cognitive bias — a gateway into behavioral science that reframed how he thought about product design, organizational behavior, and human decision-making. Harmonics Research is the natural extension: a platform to share that synthesis openly.

LSEUC BerkeleyMeta AdobePandora Radio Behavioral SciencePsychology of AI