Research, theory and practitioner models that give the field notes a wider frame.
The core text for Self-Determination Theory, which argues that autonomy, competence and relatedness are basic psychological needs. It is the strongest academic anchor for asking whether a product supports agency and growth or merely extracts attention.
Guilford Press
A practical explanation of Jobs to Be Done: people “hire” products to make progress in particular circumstances. Its most useful contribution is the insistence that a product’s functional, social and emotional jobs should be examined together.
Christensen Institute
The Theory of Consumption Values separates functional, social, emotional, epistemic and conditional value. It is particularly useful for explaining why people pay for products that deliver identity, novelty or context-specific value rather than only practical utility.
WorldCat catalogue search
Introduces the popular Trigger → Action → Variable Reward → Investment loop for habit-forming products. It is useful as a diagnostic for retention, but it should be read critically: it is a design framework rather than a comprehensive or neutral account of human motivation.
Goodreads book record
A practical behaviour-design model built around making actions easy, connecting them to prompts and celebrating completion. It helps distinguish useful friction reduction from the more coercive use of urgency or pressure.
Tiny Habits
Presents the Octalysis framework, a widely used vocabulary for motivation in games and products, including achievement, ownership, social influence, scarcity, curiosity and loss avoidance. Treat it as a useful design lens rather than settled behavioural science.
Yu-kai Chou
An accessible popular account of cue, routine and reward. It is helpful for narrative framing around repeated behaviour, though it should be paired with more rigorous behavioural research when making strong causal claims.
Charles Duhigg
A Journal of Consumer Research article rather than a book. Across experiments, participants generally valued physical versions of equivalent goods more highly than digital ones, a finding connected to psychological ownership.
Journal of Consumer Research
The foundational account of conspicuous consumption: public spending can operate as a status signal because it is visible and costly. Its language is historical, but the core idea remains highly useful for analysing luxury, leaderboard rank and products such as I Am Rich.
Project GutenbergEvidence note: This shelf combines peer-reviewed research, foundational theory, business books and practitioner models. Labels indicate the role each source plays here; they are not a ranking of quality or a substitute for reading the original work.