Abstract:
:We examine the demographic correlates of paternity confidence, or men's assessment of the likelihood that they are the genetic father of a particular child. Evolutionary theory predicts that men will provide less parental investment for putative genetic offspring who are unlikely to be their actual offspring, but confidence of paternity has not been as extensively examined as its importance would merit. Using self-reported data on paternity confidence in 3,360 pregnancies reported by men living in Albuquerque, New Mexico, we find that low paternity confidence is more common among unmarried couples and for unplanned pregnancies. We also find that men are more likely not to state paternity confidence (i.e., they refuse to answer the question) if a pregnancy is unplanned. We additionally examine the pregnancy outcomes associated with confidence of paternity. We find that low paternity confidence pregnancies are significantly more likely to be aborted, and pregnancies for which paternity confidence is unstated are more likely to be aborted or to miscarry. Both abortion and miscarriage are associated with unmarried couples, with unplanned pregnancies, and with couples who have fewer children together.
journal_name
Am J Phys Anthropoljournal_title
American journal of physical anthropologyauthors
Anderson KG,Kaplan H,Lancaster JBdoi
10.1002/ajpa.20452subject
Has Abstractpub_date
2006-12-01 00:00:00pages
560-71issue
4eissn
0002-9483issn
1096-8644journal_volume
131pub_type
杂志文章abstract::Enamel hypoplasias, deficiencies in enamel thickness resulting from disturbances during the secretory phase of enamel development, are generally believed to result from nonspecific metabolic and nutritional disruptions. However, data are scare on the prevalence and chronological distributions. of hypoplasias in popula...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330720103
更新日期:1987-01-01 00:00:00
abstract::The Ainu people are considered to be the descendants of preagricultural native populations of northern Japan, while the majority of the population of contemporary Japan (Wajin) is descended mainly from postneolithic migrants. Polymorphisms of the HLA-DRB1, DRB3, and DQB1 alleles were investigated in DNA samples of 50 ...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/(SICI)1096-8644(199609)101:1<1::AID-AJPA1>
更新日期:1996-09-01 00:00:00
abstract::This study uses data resampling to test the null hypothesis that the degree of variation in the cranial capacity of the Dmanisi hominid sample is within the range variation of a single species. The statistical significance of the variation in the Dmanisi sample is examined using simulated distributions based on compar...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.20105
更新日期:2005-07-01 00:00:00
abstract:OBJECTIVES:Human language represents an extreme form of communicative complexity. Primate facial display complexity, which depends upon facial mobility, can be used as a model for the study of the evolution of communicative complexity. The gelada (Theropithecus gelada) is the only primate that can produce a lip-flip ev...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.24031
更新日期:2020-06-01 00:00:00
abstract::The discovery that metabolically active brown fat is present in humans throughout ontogeny raises new questions about the interactions between thermoregulatory, metabolic, and skeletal homeostasis. Brown adipose tissue (BAT) is distinct from white adipose tissue (WAT) for its ability to burn, rather than store, energy...
journal_title:American journal of physical anthropology
pub_type: 杂志文章,评审
doi:10.1002/ajpa.22661
更新日期:2015-02-01 00:00:00
abstract::This paper describes the development of a knuckle walking mode of locomotion by a free-living yellow baboon (Papio cynocephalus). Some implications of this occurrence for theories of the evolution of knuckle walking are discussed. ...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330430217
更新日期:1975-09-01 00:00:00
abstract::Mandibular cross sections of Pan, Pongo, Gorilla, Homo, and two fossil specimens of Paranthropus were examined by computed tomography (CT) to determine the biomechanical properties of the hominoid mandibular corpus. Images obtained by CT reveal that while the fossil hominids do not differ significantly from extant hom...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330800111
更新日期:1989-09-01 00:00:00
abstract::A brief description of the exposed middle ear from two Swartkrans specimens demonstrates the feasibility of examining the inner auditory structures of existing fossil hominid material. These Swartkrans fossils provide the first clear view of the early hominid middle ear, and their structures appear to be morphological...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.1330510320
更新日期:1979-09-01 00:00:00
abstract::Gross and radiographic changes characteristic of inadequate bone mineralization due to rickets are described in 21 immature skeletons from a 19th century urban population from Birmingham, England. The aims of the study are as follows: to evaluate and if possible augment existing dry-bone criteria for the recognition o...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.20292
更新日期:2006-03-01 00:00:00
abstract::Field observations of bipedal posture and locomotion in wild chimpanzees (Pan troglodytes) can serve as key evidence for reconstructing the likely origins of bipedalism in the last prehominid human ancestor. This paper reports on a sample of bipedal bouts, recorded ad libitum, in wild chimpanzees in Bwindi Impenetrabl...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.20284
更新日期:2006-02-01 00:00:00
abstract::The history of discovery and interpretation of primate footprints at the site of Laetoli in northern Tanzania is reviewed. An analysis of the geological context of these tracks is provided. The hominid tracks in Tuff 7 at Site G in the Garusi River Valley demonstrate bipedality at a mid-Pliocene datum. Comparison of t...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330720409
更新日期:1987-04-01 00:00:00
abstract:OBJECTIVES:This paper addresses the prevalence and pattern of physical violence in the prehispanic society of Gran Canaria and discusses its link with the social structure and insular context in which that people lived. MATERIALS AND METHODS:347 prehispanic crania from Guayadeque Ravine (575-1415 AD) have been examine...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.23400
更新日期:2018-05-01 00:00:00
abstract::New fossil hominid specimens from the Laetolili fossil locality in Tanzania are described. The material includes mandibles and teeth derived from reliably-dated deposits of Pliocene age. Preliminary descriptions, measurements and illustrations are presented. ...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.1330460203
更新日期:1977-03-01 00:00:00
abstract::The order in which ectocranial sutures undergo fusion displays species-specific variation among primates. However, the precise relationship between suture closure and phylogenetic affinities is poorly understood. In this study, we used Guttman Scaling to determine if the modal progression of suture closure differs amo...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.20821
更新日期:2008-08-01 00:00:00
abstract::Several studies on human energetics have been conducted in developed and developing countries, but very few simultaneously measured time use and energy expenditure. Only a few quantitatively compared subsistence patterns between rural and urban dwellers of an identical population. Here we present the daily physical ac...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/1096-8644(200103)114:3<258::AID-AJPA1024>3
更新日期:2001-03-01 00:00:00
abstract:INTRODUCTION:Physiological stress is one of the various factors that can have an impact on stable isotope ratios. However, its effect on bone collagen stable isotope ratios is still not fully understood. This study aims to build on previous research on how different disease stages may affect bone collagen stable isotop...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.23958
更新日期:2020-02-01 00:00:00
abstract::A new genus and species of notharctine primate, Hesperolemur actius, is described from Uintan (middle Eocene) aged rocks of San Diego County, California. Hesperolemur differs from all previously described adapiforms in having the anterior third of the ectotympanic anulus fused to the internal lateral wall of the audit...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330980406
更新日期:1995-12-01 00:00:00
abstract::Multivariate analyses, supplemented by univariate statistical methods, of measurements from mandibular tooth crown dimensions and the mandible of Gigantopithecus blacki, G. bilaspurensis, Plio-Plelstocene hominids, Homo erectus, and seven Neogene ape species from the genera Proconsul, Sivapithecus, Ouranopithecus, and...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330530410
更新日期:1980-11-01 00:00:00
abstract::The limbic frontal cortex forms part of the neural substrate responsible for emotional reactions to social stimuli. Area 13 is one of the cortical areas long known to be part of the posterior orbitofrontal cortex in several monkey species, such as the macaque. Its presence nevertheless in the human brain has been uncl...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/(SICI)1096-8644(199806)106:2<129::AID-AJPA
更新日期:1998-06-01 00:00:00
abstract::Bone samples from a Middle Bronze Age (ca., 1600-1300 BC) site were prepared for histological analysis. Preliminary results suggested that components of bone marrow remained preserved. To verify these findings and optimize the sample preparation procedure, we conducted experiments varying the type of acid used to deca...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22375
更新日期:2013-12-01 00:00:00
abstract::Craniofacial variables for modern and prehistoric Japanese were subjected to multivariate analysis to test the relationships of the people of Japan with mainland Asian and Oceanic samples. The modern Japanese are tied to Koreans, Chinese, Southeast Asians, and the Yayoi rice agriculturalists who entered Japan in 300 B...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.1330780110
更新日期:1989-01-01 00:00:00
abstract::All primates regularly move within three-dimensional arboreal environments and must often climb, but little is known about the energetic costs of this critical activity. Limited previous work on the energetics of incline locomotion suggests that there may be differential selective pressures for large compared to small...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.21465
更新日期:2011-05-01 00:00:00
abstract::Sexual dimorphism in primate species expresses the effects of phylogeny, life history, behavior, and ontogeny. The causes and implications of sexual dimorphism have been studied in several different primates using a variety of morphological databases such as body weight, canine length, and coat color and ornamentation...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/(SICI)1096-8644(199811)107:3<243::AID-AJPA
更新日期:1998-11-01 00:00:00
abstract::Morphological measurements were collected from 12 wild and 12 captive mona monkeys (Cercopithecus mona) on the Caribbean island of Grenada. Mona monkeys were introduced to Grenada from Africa approximately 200 to 300 years ago during the slave trade era. Wild monkeys were captured using either 1) a baited treadle-door...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/(SICI)1096-8644(199804)105:4<481::AID-AJPA
更新日期:1998-04-01 00:00:00
abstract::Evidence has recently accumulated that the Singa calvaria from Sudan probably dates from Oxygen Isotope Stage 6 (>130 ka). Morphological studies have indicated a mixture of archaic and more modern human traits, but such analyses are complicated by the possibility that the vault is pathologically deformed, although the...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/(SICI)1096-8644(199809)107:1<41::AID-AJPA4
更新日期:1998-09-01 00:00:00
abstract::Recently spatial autocorrelation has been employed to infer microevolutionary processes from patterns of genetic variation. In theory, different processes should show characteristic signature correlograms; e.g., clinal selection should produce correlograms decreasing from positive to negative autocorrelation, whereas ...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330950403
更新日期:1994-12-01 00:00:00
abstract::This paper is one in a series which explores the possibility of using the non-destructive CT technique to identify patterns in tooth enamel distribution and structure of hominid molars from Plio-Pleistocene sites in South Africa, notably Swartkrans, Sterkfontein, and Kromdraai. Whereas previous investigators have emph...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330890202
更新日期:1992-10-01 00:00:00
abstract::This article examines the curvature of the manual proximal and middle phalanges of species belonging to Pan, Gorilla, Ateles, Macaca, Pongo, Hylobates, and Cebus to determine whether middle phalangeal curvature, when considered in conjunction with proximal phalangeal curvature, yields a locomotor signal. Prior studies...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.20701
更新日期:2008-01-01 00:00:00
abstract::The reproductive histories of women aged 45-70 years from a homogeneous Berber population of South Morocco were sampled from three contrasting environments: a small town (n = 75), villages in the lowlands (n = 217), and villages in the highlands (n = 128). The main reproductive variables oppose the relatively better c...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/(SICI)1096-8644(199606)100:2<181::AID-AJPA
更新日期:1996-06-01 00:00:00
abstract::A virtually complete skeleton recovered from excavations in a Late Upper Paleolithic context by Cardini between 1940 and 1942 at the Arene Candide cave (NW Italy) lacks the normal development of the left and right lesser trochanters. The specimen is a short-statured male about 25 years old and shows no other especiall...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.1330830404
更新日期:1990-12-01 00:00:00