RESEARCH BASE
Search 3,721 documents across 34 fields — every claim tier-rated by evidence
3,633 are the core, quality-scored corpus (34 lettered sections — see How We Work); the remaining 88 are cross-corpus synthesis documents (68 InterDocs, 12 Connections, 8 Theories) also indexed here.
507 results for "social brain hypothesis" — page 15 of 26
T_3_19 — Feral Children, Linguistic Deprivation, and Critical Period Evidence
Feral children — individuals who grew up with minimal or no human contact during their early years — provide the most compelling (and tragic) natural evidence for the critical period hypothesis in language acquisition. T
T_5_04 — Psychology of Religion and Spirituality
The psychology of religion investigates why humans believe in supernatural agents, how religious practices affect cognition and well-being, and what psychological functions religion serves. The field was inaugurated by W
T_5_17 — Cultural Memory: Collective Remembrance, Tradition, and Identity
Cultural memory — the shared body of knowledge, narratives, images, and rituals through which a society constructs and maintains its sense of identity across generations — emerged as a distinct academic field in the late
D_2_21 — Black Sea Deluge: Archaeological Evidence for Rapid Flooding
The Black Sea Deluge Hypothesis proposes that the Black Sea — now a large saline body connected to the Mediterranean via the Bosporus Strait — was once a significantly smaller, lower freshwater lake during the Last Glaci
B_1_08 — Horned Deities: Pan, Cernunnos, Pashupati, and the Devil's Horns
Horned deities — divine or semi-divine beings depicted with animal horns or antlers — represent one of the most persistent and contested iconographic traditions in world religion. From the "Sorcerer" of Trois-Frères (c.
ZD_1_05 — Computational Complexity: P vs NP and the Limits of Efficient Computation
Computational complexity theory classifies problems not by whether they can be solved, but by how efficiently they can be solved — and its central open question, P vs NP, is one of the seven Clay Millennium Prize Problem
ZD_3_09 — History of the Internet — From ARPANET to the Decentralized Web
The Internet — the global network of interconnected computer networks using standardized protocols to exchange data — is the most transformative communication technology since the printing press, connecting over 5 billio
ZD_5_01 — Graph Theory and Algorithms
Graph theory — the mathematical study of graphs (networks of vertices/nodes connected by edges/links) — is one of the most widely applicable branches of mathematics, modeling everything from social networks and transport
ZD_4_06 — Mathematical Sociology and Network Analysis
Mathematical sociology applies formal mathematical models — graph theory, probability, game theory, dynamical systems, and statistical mechanics — to understand social structures, collective behavior, and institutional d
ZD_2_01 — Machine Learning Mathematics
Machine learning — the science of algorithms that improve through experience — rests on a rich mathematical foundation spanning optimization, statistics, linear algebra, probability, and functional analysis. The core mat
L_1_13 — Homo Naledi: Underground Burial and Primitive Morphology
Homo naledi is one of the most unexpected and controversial hominin discoveries of the 21st century. Announced in 2015 by Lee Berger (University of the Witwatersrand) and an international team, the species was recovered
L_1_14 — Homo Erectus: The Most Successful Human Species
Homo erectus (including regional variants sometimes classified as H. ergaster, H. georgicus, H. soloensis, and H. pekinensis) is arguably the most successful hominin species in evolutionary history — persisting for nearl
L_1_07 — Genetic Bottlenecks, Founder Effects, and Toba
Genetic bottlenecks — dramatic reductions in population size that slash genetic diversity — and founder effects — the reduced variation carried by small colonizing groups — have profoundly shaped the genomes of species f
L_4_06 — Epigenetics and Transgenerational Inheritance
Epigenetics — the study of heritable changes in gene expression that occur without alterations to the DNA sequence itself — has transformed modern biology by revealing a layer of regulatory information "above" the genome
L_4_17 — Transgenerational Epigenetic Trauma
Transgenerational epigenetic inheritance of trauma — the hypothesis that severe stress, famine, or psychological trauma experienced by one generation can alter the epigenetic marks (DNA methylation, histone modifications
L_2_11 — Ancient DNA and the Indo-European Question
The Indo-European question — where was the homeland of the Proto-Indo-European (PIE) language, and how did the Indo-European family spread to encompass languages from Ireland to India? — has been one of the most debated
L_2_10 — Human–Dog Co-Evolution: 40,000 Years Together
The domestication of the dog (Canis lupus familiaris) from gray wolves (Canis lupus) represents the oldest known domestication event and one of the most consequential interspecies relationships in human history — predati
L_3_06 — Genetics of Intelligence and Cognition
The genetics of intelligence — one of the most studied yet contentious areas in behavioral genetics — has established that cognitive ability, as measured by standardized tests, has a substantial heritable component (~50–
L_5_01 — Human Microbiome and Co-Evolution
The human microbiome — the aggregate community of microorganisms (bacteria, archaea, fungi, viruses, protists) living on and within the human body — comprises roughly 38 trillion microbial cells (Sender et al., 2016, Cel
L_5_04 — Ancient Microbiome and Paleomicrobiology
Paleomicrobiology — the study of ancient microorganisms through the application of molecular techniques (ancient DNA extraction, metagenomics, proteomics) to archaeological and paleontological material — has revolutioniz
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