The DOI matches its Crossref record; 46 of the 47 references it cites were found in a registry or an index.
Brain Size, Cranial Morphology, Climate, and Time Machines [and Comments and Reply]
Abstract
A bioclimatic model is evaluated as an explanation of variation in cranial capacity among 122 ethnic groups. Distribution of absolute and relative endocranial volume is mapped. Significant correlations occur with all nine climatic variables examined. Major foci of adaptation occur with solar radiation, vapor pressure, and winter temperature. Global mean trait increase is 2.5 cm per degree of equatorial distance. The interactive geometry between cranial size and shape is described, with encephalization and brachycephalization considered as functionally connected trends. Breadth is the most important structural component determining capacity. Relations between body size and brain size indicate that human populations under severe cold stress obtain large volumes more from rounder cranial shape than from differentiation by total body size. A computerized mapping program is developed and applied to anthropometric, climatic, and HRAF files. Its potential to produce clinal depictions through the Pleistocene ("time machine project") is discussed. Paleontological data are summarized for 147 hominids.
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In the citing paper
“both absolute and relative brain size have decreased since the end of the Pleistocene (Schwidetzky, 1976;Wiercinski, 1979;Beals et al., 1984;Henneberg, 1988;Henneberg and Steyn, 1993;Ruff et al., 1997;Bailey and Geary, 2009;Hawks, 2011;Bednarik, 2014;Liu et al., 2014;Bruner and Gleeson, 2019).”
From When and Why Did Human Brains Decrease in Size? A New Change-Point Analysis and Insights From Brain Evolution in Ants (2021) · cites this paper as Beals et al., 1984
In the citing paper
“Human body size, as measured from skeletal dimensions, did reduce during the past 30,000 years, at least in some populations [1,6,7,12].”
From Selection for smaller brains in Holocene human evolution (2011) · cites this paper as [6]
In the citing paper
“Human populations during the last 10,000 years have undergone rapid decreases in average brain size as measured by endocranial volume or as estimated from linear measurements of the cranium.”
From Selection for smaller brains in Holocene human evolution (2011) · cites this paper as [6]
In the citing paper
“Present-day Chinese people appear to vary in cranial size from north to south, possibly by more than 100 ml [6,19]”
From Selection for smaller brains in Holocene human evolution (2011) · cites this paper as [6]
In the citing paper
“Smaller-brained populations live in warmer climates, and this relation cannot be explained entirely in terms of body size of contemporary populations.”
From Selection for smaller brains in Holocene human evolution (2011) · cites this paper as [6]
In the citing paper
“Studies of skeletal samples from different regions of the world are very consistent in finding reductions of endocranial volume during the last 10,000 years [6-8,19,22-24].”
From Selection for smaller brains in Holocene human evolution (2011) · cites this paper as [6]
Citations
Cites
EVOLUTION OF THE BRAIN AND INTELLIGENCE
Radinsky, L., & Jerison, H. J. (1975) · Evolution · doi:10.2307/2407154 · Cited by 1,982
Standard cross-cultural sample
Murdock, G. P., & White, D. R. (1969) · Ethnology · doi:10.2307/3772907 · Cited by 1,149
Kaplan, S. J. (1950) · PubMed Central · Cited by 1,050
PHENOTYPIC, GENETIC, AND ENVIRONMENTAL MORPHOLOGICAL INTEGRATION IN THE CRANIUM
Cheverud, J. M. (1982) · Evolution · doi:10.1111/j.1558-5646.1982.tb05070.x · Cited by 859
Computational Methods of Multivariate Analysis in Physical Geography
(1977) · Computers & Mathematics with Applications · doi:10.1016/0898-1221(77)90073-6 · Cited by 520
Pilbeam, D., & Gould, S. J. (1974) · Science · doi:10.1126/science.186.4167.892 · Cited by 416
Asymmetries of the skull and handedness
LeMay, M. J. (1977) · Journal of the Neurological Sciences · doi:10.1016/0022-510x(77)90239-8 · Cited by 313
Roberts, D. (1973) · Addison-Wesley eBooks · Cited by 248
Jorgensen, J. G. (1979) · Annual Review of Anthropology · doi:10.1146/annurev.an.08.100179.001521 · Cited by 244
The Theory of Evolution by Natural Selection: A Hierarchical Expansion
Arnold, A. J., & Fristrup, K. M. (1982) · Paleobiology · doi:10.1017/s0094837300004462 · Cited by 221
Morton's Ranking of Races by Cranial Capacity
Gould, S. J. (1978) · Science · doi:10.1126/science.347573 · Cited by 176
Beaumont, J., Villiers, D., & Vogel, H. U. (1978) · South African Journal of Science · Cited by 166
Coon, C. S., & Hunt, E. E. (1965) · Alfred A. Knopf eBooks · Cited by 164
Koertvelyessy, T. (1972) · American Journal of Physical Anthropology · doi:10.1002/ajpa.1330370202 · Cited by 113
Climate and anthropometric variations in Europe and the Mediterranean area
Crognier, É. (1981) · Annals of Human Biology · doi:10.1080/03014468100004841 · Cited by 112
Climatic influence on the skeletal nasal aperture
Wolpoff, M. H. (1968) · American Journal of Physical Anthropology · doi:10.1002/ajpa.1330290315 · Cited by 107
Temporal variation in prehistoric Nubian crania
Carlson, D. S. (1976) · American Journal of Physical Anthropology · doi:10.1002/ajpa.1330450308 · Cited by 99
Encephalization in Hominids: Evidence for the Model of Punctuationalism
Hofman, M. A. (2008) · Brain, Behavior and Evolution · doi:10.1159/000121511 · Cited by 90
Gradual, autocatalytic and punctuational models of hominid brain evolution: A cautionary tale
Godfrey, L. R., & Jacobs, K. H. (1981) · Journal of Human Evolution · doi:10.1016/s0047-2484(81)80063-2 · Cited by 89
QUANTITATIVE COMPARISONS OF BRAIN STRUCTURES FROM INSECTIVORES TO PRIMATES
Stephan, H., & Andy, O. J. (1964) · American Zoologist · doi:10.1093/icb/4.1.59 · Cited by 84
Occipital bunning among later pleistocene hominids
Trinkaus, E., & LeMay, M. J. (1982) · American Journal of Physical Anthropology · doi:10.1002/ajpa.1330570106 · Cited by 78
Self-citationECOLOGICAL RULES, BODY-HEAT REGULATION, AND HUMAN EVOLUTION
Schreider, E. (1964) · Evolution · doi:10.1111/j.1558-5646.1964.tb01562.x · Cited by 68
Environmental constraints on infant care practices
Whiting, J. (1993) · Cambridge University Press eBooks · doi:10.1017/cbo9780511598340.009 · Cited by 67
Coleman, D. A., & Brues, A. M. (1979) · Population Studies · doi:10.2307/2173544 · Cited by 66
Climate and the evolution of brachycephalization
Beals, K. L., Smith, C. L., & Dodd, S. M. (1983) · American Journal of Physical Anthropology · doi:10.1002/ajpa.1330620407 · Cited by 59
Self-citationCranial capacity and linear dimensions, in White and Negro
Todd, T. W., & Russell, M. (1923) · American Journal of Physical Anthropology · doi:10.1002/ajpa.1330060202 · Cited by 57
Hereditary Factors in the Sutural Pattern of the Skull
Torgersen, J. (1951) · Acta Radiologica · doi:10.3109/00016925109176987 · Cited by 46
Craniology of the North Pacific coast
Oetteking, B. (1930) · Medical Entomology and Zoology · Cited by 45
BIOLOGICAL ADAPTATION OF MAN TO HIS ENVIRONMENT: HEAT, COLD, ALTITUDE, AND NUTRITION
Newman, M. T. (1961) · Annals of the New York Academy of Sciences · doi:10.1111/j.1749-6632.1961.tb31093.x · Cited by 39
Absolute age of the base of the hominid-bearing beds in Eastern Java
Ninkovich, D., & Burckle, L. H. (1978) · Nature · doi:10.1038/275306a0 · Cited by 36
Climate, culture, and evolution.
Baker, P. T. (1960) · PubMed · Cited by 35
Smouse, P. E., Neel, J. V., & Liu, W. (1983) · Genetics · doi:10.1093/genetics/104.1.133 · Cited by 33
Basic Problems, Techniques, and Theory of Isopleth Mapping*
Schmid, C. F., & MacCannell, E. H. (1955) · Journal of the American Statistical Association · doi:10.1080/01621459.1955.10501260 · Cited by 28
A Note on How Many Humans That Have Ever Lived
Westing, A. H. (1981) · BioScience · doi:10.2307/1308496 · Cited by 14
External cranial volume as an estimate of cranial capacity
Jørgensen, J. B., & QUAADE, F. (1956) · American Journal of Physical Anthropology · doi:10.1002/ajpa.1330140409 · Cited by 13
Relation of the size of the head and skull to capacity in the two sexes
Hrdlička, A. (1925) · American Journal of Physical Anthropology · doi:10.1002/ajpa.1330080301 · Cited by 13
Taylor, J. V., & Dibennardo, R. (1980) · American Journal of Physical Anthropology · doi:10.1002/ajpa.1330530120 · Cited by 13
Hrdlička, A. (1942) · American Journal of Physical Anthropology · doi:10.1002/ajpa.1330290402 · Cited by 11
Baron, G. (1979) · Folia Primatologica · doi:10.1159/000155874 · Cited by 11
Genetic Variation and Cultural Evolution1
Beals, K. L., & Kelso, A. J. (1975) · American Anthropologist · doi:10.1525/aa.1975.77.3.02a00060 · Cited by 11
Self-citationThe estimation of cranial capacity. A comparison of the direct water and seed methods
Todd, T. W., & Kuenzel, W. M. (1925) · American Journal of Physical Anthropology · doi:10.1002/ajpa.1330080302 · Cited by 7
Cranial capacity: Comparative data on the techniques of Macdonell and Breitinger
Tildesley, M. L., & Datta‐Majumder, N. (1944) · American Journal of Physical Anthropology · doi:10.1002/ajpa.1330020302 · Cited by 4
Quantitative genetical analysis of morphological characters of the human head and face
Bernhard, W., Hancke, A., Bräuer, G., & Chopra, V. P. (1980) · Journal of Human Evolution · doi:10.1016/0047-2484(80)90093-7 · Cited by 3
The Subdivisions of Physical Anthropology
Kelso, A. J. (1966) · Current Anthropology · doi:10.1086/200720 · Cited by 2
Relation of cranial module to capacity
Sankas, S. H. (1930) · American Journal of Physical Anthropology · doi:10.1002/ajpa.1330140209 · Cited by 2
Schlaginhaufen, O. (1940) · American Journal of Physical Anthropology · doi:10.1002/ajpa.1330260137 · Cited by 2
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A new small-bodied hominin from the Late Pleistocene of Flores, Indonesia.
Brown, P., Sutikna, T., Morwood, M. J., Soejono, R. P., Jatmiko, Wayhu Saptomo, E., & Awe Due, R. (2004) · Nature · doi:10.1038/nature02999 · Cited by 1,075
Body mass and encephalization in Pleistocene Homo.
Ruff, C. B., Trinkaus, E., & Holliday, T. W. (1997) · Nature · doi:10.1038/387173a0 · Cited by 896
Self-citationMorphological adaptation to climate in modern and fossil hominids
Ruff, C. B. (1994) · American Journal of Physical Anthropology · doi:10.1002/ajpa.1330370605 · Cited by 684
Thirty years of research on race differences in cognitive ability.
Rushton, J. P., & Jensen, A. R. (2005) · Psychology, Public Policy, and Law · doi:10.1037/1076-8971.11.2.235 · Cited by 457
Craniometric variation among modern human populations
Relethford, J. H. (1994) · American Journal of Physical Anthropology · doi:10.1002/ajpa.1330950105 · Cited by 418
Metadata
- Authors
- Beals, K. L., Smith, C. L., Dodd, S. M., Angel, J. L., Armstrong, E., Blumenberg, B., Girgis, F. G., Turkel, S., Gibson, K. R., Henneberg, M., Menk, R., Morimoto, I., Sokal, R. R., & Trinkaus, E.
- Venue
- Current Anthropology
- Publisher
- University of Chicago Press
- Published
- 1984-06
- Volume
- 25
- Issue
- 3
- Pages
- 301-330
- ISSN
- 0011-3204 (ISSN-L)
- 1537-5382
- OpenAlex
- W2250964297
- Cited by
- 332
- References
- 47
- Citations by year
- 2026: 3 · 2025: 7 · 2024: 11 · 2023: 7 · 2022: 9 · 2021: 29 · 2020: 5 · 2019: 8 · 2018: 10 · 2017: 7 · 2016: 12 · 2015: 8 · 2014: 17 · 2013: 10 · 2012: 14
- FWCI
- 44.17
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Current Anthropology (publishedVersion)
- Topics
- Social Sciences › Arts and Humanities › Archeology (arts and humanities) › Forensic Anthropology and Bioarchaeology Studies
- Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Morphological variations and asymmetry
- Social Sciences › Anthropology › Pleistocene-Era Hominins and Archaeology
- Keywords
- cranial capacity, endocranial volume, brain size, skull morphology, bioclimatic models, encephalization, cranial breadth, cold adaptation, solar radiation, vapor pressure, winter temperature, clinal variation, hominid brain evolution
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