The Psychology of Virality
Trends in Cognitive Sciences · Review · Reviews & maps
Best current psychology-led map; explicitly connects content, motives, networks, norms, incentives, and algorithms.
Essential-03 underwayUpdated 1 September 2026
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140 sources shown
Trends in Cognitive Sciences · Review · Reviews & maps
Best current psychology-led map; explicitly connects content, motives, networks, norms, incentives, and algorithms.
Annual Review of Psychology · Review · Reviews & maps
Current review of audiences, modalities, channels, devices, and sharing motives.
Marketing Intelligence & Planning · Systematic review · Reviews & maps
Recent field map organized around antecedents, outcomes, channels, mutation/replication, and measurement.
Information · Survey · Reviews & maps
Taxonomy of explanatory and predictive diffusion models.
SIGMOD Record · Survey · Reviews & maps
Influential survey covering diffusion models, topic detection, and influential spreaders.
International Journal of Research in Marketing · Critical review · Reviews & maps
Connects classic diffusion models to network effects and modern product growth.
Complex Spreading Phenomena in Social Systems · Review chapter · Reviews & maps
Consolidates reinforcement, clustering, homophily, and topology results.
Science · Review · Reviews & maps
Useful negative-case literature on rapid diffusion, novelty, identity, and platform design.
Journal of Consumer Psychology · Review · Reviews & maps
Compact conceptual bridge between consumer psychology and social transmission.
Journal of Marketing Research · Meta-analysis · Reviews & maps
Quantifies when eWOM relates to sales and how platform/product/metric choices moderate effects.
Free Press · Book · Diffusion & adoption
Canonical adoption framework: innovation attributes, adopter categories, communication channels, time, and social systems.
Management Science · Paper · Diffusion & adoption
Origin of the Bass innovation/imitation model and a baseline for growth curves.
American Journal of Sociology · Paper · Network structure
Foundational account of bridges between clusters and information reach.
American Journal of Sociology · Paper · Thresholds & cascades
First-principles explanation for cascades from heterogeneous adoption thresholds.
Psychology Today · Paper · Network structure
Classic evidence motivating short-path network reasoning; method has limitations.
W. W. Norton · Book · Thresholds & cascades
Durable micro-to-macro reasoning for tipping and unintended aggregate outcomes.
Nature · Paper · Network structure
Shows how clustering plus short paths changes propagation.
Science · Paper · Network structure
Preferential attachment and heavy-tailed degree distributions; important but not universal.
PNAS · Paper · Thresholds & cascades
Explains cascade windows and why highly connected networks can resist some global cascades.
American Journal of Sociology · Paper · Complex contagion
Distinguishes simple exposure from adoption requiring reinforcement.
Science · Paper · Complex contagion
Causal evidence that clustered networks can accelerate reinforced behavior.
PNAS · Paper · Complex contagion
Independent social contexts can matter more than raw friend count.
KDD · Paper · Influence maximization
Seminal seeding optimization under independent-cascade and linear-threshold models.
STOC · Paper · Network navigation
Separates short paths from decentralized ability to find them.
Marketing Letters · Paper · Diffusion & adoption
Early synthesis of weak ties, local spread, and market-level diffusion.
Journal of Marketing · Paper · Seeding & influencers
Tests whether hubs lead adoption or mainly accelerate reach.
Marketing Science · Paper · Seeding & influencers
Formalizes when targeting influentials can or cannot drive takeoff.
Marketing Science · Paper · Seeding & influencers
Separates self-reported influence from network position and actual adoption timing.
PNAS · Paper · Causal identification
Critical warning: correlated adoption is not automatically peer influence.
Statistical Science · Paper · Network targeting
Classic evidence for network-neighbor signals in targeting.
Journal of Marketing Research · Paper · Content psychology
Landmark content-characteristics study; especially emotion and arousal.
Psychological Science · Paper · Content psychology
Causal test of physiological arousal as a sharing mechanism.
Journal of Marketing Research · Paper · Content psychology
Distinguishes immediate triggers from persistent accessibility and product interest.
Journal of Consumer Research · Paper · Channel effects
Shows that asynchronous/written channels alter what gets shared.
Journal of Personality and Social Psychology · Paper · Content psychology
Memorability and emotional-selection precursor to online virality research.
Journal of Consumer Research · Paper · Identity & signaling
Identity signaling shapes differentiation and transmission.
Journal of Personality and Social Psychology · Paper · Identity & signaling
Shows how outgroups can influence abandonment and cultural spread.
Journal of Marketing Research · Paper · Audience design
Audience size changes self-presentation and sharing choices.
Journal of Personality and Social Psychology · Paper · Audience design
Useful for interpreting prosocial sharing and reputational signals.
Perspectives on Psychological Science · Paper · Neuroscience of sharing
Frames sharing as expected value integrating self and social outcomes.
Psychological Science · Paper · Neuroscience of sharing
Links neural response to aggregate persuasion beyond self-report.
PNAS · Paper · Neuroscience of sharing
Direct model of self-related and social value in sharing decisions.
Psychological Science · Paper · Neuroscience of sharing
Independent evidence for a domain-general sharing-value signal.
Journal of Experimental Psychology: General · Paper · Message design
Causal tests of self and social relevance framing.
PNAS · Paper · Moral emotion
Key evidence on moral-emotional language and diffusion.
Perspectives on Psychological Science · Review · Moral emotion
Integrates motivation, attention, and platform design.
Science · Paper · Novelty & misinformation
Landmark evidence on novelty, emotion, depth, breadth, and speed of diffusion.
PNAS · Paper · Moral emotion
Negative identity content as an engagement driver; relevant to quality/safety tradeoffs.
Nature Human Behaviour · Perspective · Moral emotion
Mechanisms by which platform affordances alter outrage expression and spread.
PNAS · Paper · Emotional contagion
Large causal study with major ethical and interpretive caveats.
PNAS Nexus · Paper · Content quality tradeoffs
Important evidence that engagement and user-valued experience can diverge.
ACM Transactions on the Web · Paper · Cascade structure
Canonical empirical study showing most cascades are small and recommendations vary by product.
SDM · Paper · Cascade structure
Early characterization of cascade shapes and temporal dynamics.
EC · Paper · Cascade structure
Shows that true large cascades are rare and often driven by many shallow branches.
Management Science · Paper · Cascade structure
Defines structural virality and separates broadcast from multi-generational spread.
WWW · Paper · Prediction
Landmark limits and signals for predicting cascade growth.
KDD · Paper · Prediction
Early-time popularity prediction with interpretable epidemic-style dynamics.
WWW · Paper · Topic mechanics
Shows that diffusion mechanics differ by topic, persistence, and repeated exposure.
WSDM · Paper · Influencers
Influence is highly skewed but difficult to predict; cost-effectiveness can favor ordinary users.
WWW · Paper · Networks vs broadcast
Separates strong-tie influence from the aggregate reach of weak ties.
Scientific Reports · Paper · Community structure
Early spread across communities as a virality signal.
ICWSM · Paper · Attention & exposure
Contrasts network exposure and platform attention processes.
ICWSM · Paper · Influence metrics
Follower count, retweets, and mentions capture different notions of influence.
SocialCom · Paper · Retweet mechanics
Early feature study of retweet propensity; historically useful, platform-old.
WWW · Paper · Platform topology
Foundational empirical description of asymmetric following and news diffusion.
Quantitative Marketing and Economics · Paper · UGC diffusion
Connects creator network position to diffusion and viewership.
Information Systems Research · Paper · UGC diffusion
Separates subscriber/friend-network effects in UGC diffusion.
WSDM · Paper · Memes & mutation
Tracks mutation, competition, and persistence of textual memes.
PLOS ONE · Paper · Perception bias
Explains why local exposure can make rare behavior seem common.
Management Science · Paper · Viral product design
Central causal paper on engineering peer exposure into product design.
Science · Paper · Causal identification
Separates influence from susceptibility and network position.
Management Science · Paper · Tie strength
Causal evidence on tie strength and embeddedness as moderators.
EC · Paper · Causal identification
Shows why people who choose to share are systematically different from those induced to share.
PNAS · Paper · Experiment design
Reusable causal design for testing referrals and social influence.
Management Science · Paper · Peer effects
Causal peer influence on paid adoption, including tie effects.
Journal of Marketing · Paper · WOM acquisition
Compares WOM acquisition dynamics with traditional channels.
Journal of Marketing Research · Paper · Customer quality
Tests long-term value differences by acquisition source.
Journal of Marketing · Paper · Referral economics
Foundational evidence on value of referred customers.
Journal of Marketing Research · Paper · Referral economics
Mechanisms, tie strength, and social capital in referral effectiveness.
Journal of Marketing · Paper · Referral incentives
Classic treatment of reward size, brand strength, and referral likelihood.
Marketing Science · Paper · Referral economics
First-principles economics of referral reward design.
Marketing Science · Paper · WOM measurement
Classic approach to volume vs dispersion of online conversations.
Marketing Science · Paper · Firm-seeded WOM
Causal evidence on targeting less-loyal agents and breadth of social reach.
Information Systems Research · Paper · Referral copy
Message framing and prosocial language in referral conversion.
Management Science · Paper · Message design
Causal evidence that platform-provided copy changes diffusion.
Journal of Management Information Systems · Paper · Referral incentives
Compares sender/recipient incentive structures.
Journal of Marketing · Paper · Referral propagation
Tests whether referred customers become referrers themselves.
Journal of Marketing · Paper · Seeding strategy
Direct empirical comparison of centrality-based seeding strategies.
Airbnb Engineering · Case study · Referral case study
Rare first-party referral redesign with explicit funnel metrics and reported lift.
Bell Journal of Economics · Paper · Network effects
Early critical-mass and network-demand model.
American Economic Review · Paper · Network effects
Canonical direct network-effects economics.
RAND Journal of Economics · Paper · Network effects
Coordination, installed base, and excess inertia/momentum.
Economic Journal · Paper · Network effects
Path dependence and increasing returns in adoption.
Journal of the European Economic Association · Paper · Two-sided platforms
Canonical two-sided pricing and participation framework.
Management Science · Paper · Two-sided platforms
Product design and subsidy choices under cross-side network effects.
Review of Network Economics · Paper · Critical mass
Practical theory of solving platform critical-mass problems.
International Journal of Industrial Organization · Paper · Platform definition
Clarifies what is—and is not—a multi-sided platform.
Strategic Management Journal · Review · Platform strategy
Strong strategy review connecting network effects to competitive advantage.
Strategic Management Journal · Paper · Platform competition
Tests trade-offs between platform scope, quality, and exclusivity.
IEEE Spectrum · Paper · Network value
Useful corrective to simplistic n-squared claims; proposes slower value scaling.
Harper Business · Book · Network effects
Modern operating framework for atomic networks, tipping points, and network expansion.
W. W. Norton · Book · Platform strategy
Widely used platform design and launch framework.
Harvard Business Review Press · Book · Platform strategy
Accessible complement to two-sided-market research.
MIS Quarterly · Paper · Adoption models
TAM baseline for adoption propensity; not a virality model by itself.
MIS Quarterly · Paper · Adoption models
UTAUT synthesis of adoption drivers and moderators.
IEEE Transactions on Engineering Management · Paper · Adoption attributes
Early meta-analysis of compatibility, relative advantage, complexity, and adoption.
TikTok Support · Official documentation · Platform algorithms
Current official ranking factors and recommendation stages.
TikTok Newsroom · Official documentation · Platform algorithms
Historical baseline for TikTok ranking signals and cold-start behavior.
WebSci · Paper · Short video
Direct study of TikTok video/content indicators and diffusion.
WWW · Paper · Short video
Audit of personalization and rapid interest reinforcement.
EPJ Data Science · Paper · Short video
Cutting-edge work on amplification dynamics; very recent and platform-specific.
About Instagram · Official documentation · Platform algorithms
Official breakdown of distinct Feed, Stories, Explore, Reels, and Search rankers.
Meta AI / Transparency Center · System card · Platform algorithms
Current system-level documentation and objectives.
YouTube Blog · Official documentation · Platform algorithms
Accessible explanation of satisfaction, watch behavior, and responsible recommendation objectives.
RecSys · Paper · Platform algorithms
Canonical candidate-generation and ranking architecture.
YouTube Help · Official documentation · Platform algorithms
Current creator/user-facing explanation of recommendation surfaces.
LinkedIn Engineering · Engineering documentation · Platform algorithms
Modern feed architecture and ranking objectives in a professional network.
arXiv / LinkedIn · Paper · Platform algorithms
Current industrial ranking model family and deployment context.
GitHub · Open-source documentation · Platform algorithms
Unique implementation-level source; version and production parity must be treated cautiously.
PNAS · Paper · Algorithmic amplification
Causal/operational evidence that ranking alters reach, with country/party heterogeneity.
Reddit Help · Official documentation · Platform algorithms
Candidate generation, filtering, prediction, sorting, diversity, and cold-account behavior.
Pinterest Engineering · Engineering case study · Platform algorithms
Current feed pre-ranking architecture for discovery-heavy content.
WWW · Paper · Platform algorithms
Graph-based recommendation and real-time personalization at scale.
Google Developers · Official documentation · Search/discovery
Official source for search discovery—not interpersonal virality, but a key scalable distribution channel.
Apple Developer · Official documentation · App-store discovery
Official app-search relevance, metadata, and behavioral signals.
Play Console Help · Official documentation · App-store discovery
Official discovery, quality, and ranking guidance for Android apps.
Bluesky Blog/Docs · Official documentation · Open algorithms
Useful contrasting model where creators can ship distribution algorithms.
WebSci · Paper · Private messaging
One of the best empirical views of diffusion in encrypted/private messaging environments.
WWW Companion · Paper · Private messaging
Methods and evidence for cross-group forwarding and content reuse.
ICWSM · Paper · Private messaging
Recent measurement of forwarding depth and chain structure.
Journal of Marketing · Paper · Creators & seeding
Moves beyond ‘largest audience wins’; tests nonlinear follower-count effects.
Journal of Marketing · Paper · Creators & seeding
Current seeding theory emphasizing interconnectors and local closure.
Science · Paper · Feed experiments
One of the 2020 Election Research Project papers on chronological vs algorithmic feeds.
Science · Paper · Feed exposure
Modern evidence on feed exposure, reshares, and ideological segregation.
Reforge · Article · Growth loops
Widely used systems framework for compounding acquisition, engagement, and content loops.
AndrewChen.com · Article · Referral design
Practical design questions and examples from Uber/Dropbox-era product growth.
AndrewChen.com · Article · Retention & virality
Important compounding argument linking retention, invitation opportunities, and loop output.
Crown Business · Book · Growth experimentation
Experiment cadence, cross-functional growth, activation, retention, and referral systems.
Portfolio · Book · Distribution portfolio
Channel-testing framework; broader than virality but useful for comparative distribution strategy.
Product-Led Institute · Book · Product-led growth
Self-serve adoption and in-product value loops; uneven evidence but influential in SaaS.