Abstract:
:The relationship between psychological stress and reduced fecundity has been a matter of speculation and investigation for decades. Most previous studies have been compromised, however, by a number of problems including ambiguous direction of causation, poorly operationalized variables, and the confounding of psychological with energetic stress. We present a two-part study of the relationship between moderate anxiety, both acute and chronic, and daily measures of ovarian steroid and corticosteroid levels in saliva. Anxiety, as a particular form of psychosocial stress, was measured by the Spielberger Stait-Trait Anxiety Inventory as well as by a self-reported daily stress score. In the first part, 23 college juniors taking the Medical College Admissions Test (MCAT) were studied the month before and the month after the test, and again several months later, and compared at the same time points with 27 controls. In the second part, chronic anxiety levels were assessed in 95 women between 27 and 41 years of age and analyzed in relation to daily levels of salivary ovarian and corticosteroids over one menstrual cycle. The sample sizes are sufficient to allow for confidence in negative results. No statistically significant differences in ovarian or corticosteroid levels were observed whether between the MCAT and control subjects in part one, between the MCAT subjects before and after the MCAT test in part one, or between high and low anxiety subjects in part two. The results indicate that moderate levels of anxiety, whether acute or chronic, are not associated with suppressed ovarian function in healthy women.
journal_name
Am J Phys Anthropoljournal_title
American journal of physical anthropologyauthors
Ellison PT,Lipson SF,Jasienska G,Ellison PLdoi
10.1002/ajpa.20698subject
Has Abstractpub_date
2007-12-01 00:00:00pages
513-9issue
4eissn
0002-9483issn
1096-8644journal_volume
134pub_type
杂志文章abstract::Distribution and variation statistics of hominid endocranial volume (ECV) have been investigated. Within the interpretative constraints imposed by (very) small sample sizes, the requirements for normality are met, as are those for heteroscedasticity. A significant difference in means can be demonstrated for only two c...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330680214
更新日期:1985-10-01 00:00:00
abstract::A variety of geometric morphometric methods have recently been used to describe dental shape variation in human evolutionary studies. However, the applicability of these methods is limited when teeth are worn or are difficult to orient accurately. Here we show that elliptical best fits on outlines of dental tissues be...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22866
更新日期:2016-02-01 00:00:00
abstract::The genes for testis-specific protein Y (TSPY) were sequenced from chimpanzee (Pan troglodytes), gorilla (Gorilla gorilla), orangutan (Pongo pygmaeus), and baboon (Papio hamadryas). The sequences were compared with each other and with the published human sequence. Substitutions were detected at 144 of the 755 nucleoti...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/(SICI)1096-8644(199607)100:3<301::AID-AJPA
更新日期:1996-07-01 00:00:00
abstract::Temporal changes, within-group variation, and phylogenetic positions of the Early Pleistocene Javanese hominids remain unclear. Recent debate focused on the age of the oldest Javanese hominids, but the argument so far includes little morphological basis for the fossils. To approach these questions, we analyzed a compr...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.10425
更新日期:2005-12-01 00:00:00
abstract::The mean fat cell diameter was determined from measurements of abdominal adipose cells, obtained during inguinal hernia repair, of 126 white and 95 black males ranging in age from 1 through 48 months of age. The mean diameters of black and white subjects did not differ significantly, suggesting that differences in fat...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330650402
更新日期:1984-12-01 00:00:00
abstract::The relationship between human placental alkaline phosphatase (PLAP) genotype and birth weight is investigated in a sample of white, black and Puerto-Rican new-born infants from New Haven, Connecticut (total 710 subjects). Black and Puerto-Rican infants show a higher incidence of growth retardation and a higher freque...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/(SICI)1096-8644(199612)101:4<449::AID-AJPA
更新日期:1996-12-01 00:00:00
abstract::Isotope variations were studied in necropolises of the early (6th to 7th century CE) and central (10th to 11th century CE) medieval period located in Fruili-Venezia Giulia (Northeastern Italy). The two periods each shortly followed two great barbarian invasions that changed the politics and economy of Italy: the arriv...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.22553
更新日期:2014-08-01 00:00:00
abstract::Pair-bonding in the genus Papio seems to be the result of fusion of troops as well as fission. When troop segments regularly split and join again, males who permanently maintain exclusive access to a few females may have an advantage over males who compete for all females who are in estrus. When two or more troops reg...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330600104
更新日期:1983-01-01 00:00:00
abstract::A method of drawing outlines of the distal end of the humerus is presented and carried out on some pongids (Pan troglodytes, Pan paniscus, Pongo pygmaeus), on modern man, and on some casts of Plio-Pleistocene hominids. It appears that these outlines are good indicators of the overall morphology and permit the distingu...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330560307
更新日期:1981-11-01 00:00:00
abstract::In the last 20 years, studies on human identified skeletal collections have revealed a significant relationship between new bone formation on the visceral surface of ribs and pulmonary tuberculosis (TB). To improve methods of differential diagnosis of respiratory diseases in archaeological skeletons, an investigation ...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.20309
更新日期:2006-06-01 00:00:00
abstract::During excavations of the Bronze Age levels at El Mirador Cave, a hole containing human remains was found. Taphonomic analysis revealed the existence of cutmarks, human toothmarks, cooking damage, and deliberate breakage in most of the remains recovered, suggesting a clear case of gastronomic cannibalism. The piled di...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.20610
更新日期:2007-07-01 00:00:00
abstract::Electrocardiographic studies have reported persistent right ventricle predominance in high altitude children as an adaptive response. No information was provided on ethnicity and environmental factors in those studies. We assessed the electrocardiographic characteristics in healthy high altitude children with mixed an...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.20563
更新日期:2007-06-01 00:00:00
abstract::In this paper we develop a model that examines fertility and childhood mortality patterns and their relationship to environmental variables. Interactions among environmental variables can account for different fertility patterns and different mixes of these variables can produce similar patterns of fertility. Our mode...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330770304
更新日期:1988-11-01 00:00:00
abstract::Atypical wear and oral lesions were studied in the dental remains from the Middle Neolithic Pitted Ware Culture site Ajvide on the island of Gotland in the Baltic Sea. Teeth (n = 764) from 17 males and 11 females were examined microscopically to document unusual wear, assess wear patterns and oral lesions as evidence ...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.20824
更新日期:2008-08-01 00:00:00
abstract::A previous study of passive joint mobility in patas monkeys (Erythrocebus patas) showed that laboratory-caged animals had significantly greater mobility in most joints than age/sex matched free-ranging monkeys. Passive joint mobility on 27 of the same animals was measured 6 months after the caged animals were released...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330670102
更新日期:1985-05-01 00:00:00
abstract::Bilateral tooth measurements in twins are partitioned into three orthogonal contrasts, each associated with one degree of freedom, to estimate three parameters: discordance, asymmetry, and mirror imagery. The probability levels of the within-pair variance ratios were used to test for significance of these estimates. T...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330440303
更新日期:1976-05-01 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:OBJECTIVES:It is a big challenge to diagnose the motives behind trepanations in prehistoric crania. Surgical-therapeutic attempts may be apparent by the presence of fractures, however, ritual or nonmedical motives are rarely supported by visible evidence in the bones. This article presents data on the trepanations of s...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.22996
更新日期:2016-08-01 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::Predation is proposed to be one of the most important factors influencing the evolution of mammalian societies. Although predation risk is thought to influence both the behavior and grouping patterns of most diurnal primates, evidence supporting this hypothesis is still limited. The spatial and temporal patterns of mi...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22230
更新日期:2013-04-01 00:00:00
abstract::Early American crania show a different morphological pattern from the one shared by late Native Americans. Although the origin of the diachronic morphological diversity seen on the continents is still debated, the distinct morphology of early Americans is well documented and widely dispersed. This morphology has been ...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.21425
更新日期:2011-03-01 00:00:00
abstract:OBJECTIVES:Riparian or gallery forests are critical habitats for numerous plants and animals today. Paleoanthropologically, reliance on such habitats informs behavioral and ecological reconstructions; for example, gallery forest habitats likely played a critical role in the transition from ape to hominin in the early P...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.23932
更新日期:2019-12-01 00:00:00
abstract::Considerable attention has been devoted to variation in levels of energy expenditure between and within populations; these are commonly evaluated following international guidelines for grading light, moderate, and heavy physical activity levels (PAL). This study presents activity profiles by season and sex for subsist...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/(SICI)1096-8644(199605)100:1<7::AID-AJPA2>
更新日期:1996-05-01 00:00:00
abstract:OBJECTIVES:The use of dental metrics in phylogenetic reconstructions of fossil primates assumes variation in tooth size is highly heritable. Quantitative genetic studies in humans and baboons have estimated high heritabilities for dental traits, providing a preliminary view of the variability of dental trait heritabili...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.23744
更新日期:2019-02-01 00:00:00
abstract::Red blood cell count (RBC), hemoglobin concentration ([Hb]) and hematocrit (Hct) were measured in 303 male Quechua children and adults, aged 6 to 57 years, living a lifestyle as traditional pastoralists and horticulturalists at a mean altitude of 4,200 m in the Southern Peruvian Andes. Values for RBC, [Hb], and Hct in...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330610310
更新日期:1983-07-01 00:00:00
abstract::Discovery of a previously unknown Bronze Age civilization (Oxus civilization) centered on the oases of Central Asia revealed the presence of large, preplanned urban centers immediately above sterile soil. Given the absence of local antecedents, the sudden appearance and proliferation of these Oxus civilization urban c...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/(SICI)1096-8644(199902)108:2<173::AID-AJPA
更新日期:1999-02-01 00:00:00
abstract::Patterns of water consumption by past human populations are rarely considered, yet drinking behavior is socially mediated and access to water sources is often socially controlled. Oxygen isotope analysis of archeological human remains is commonly used to identify migrants in the archeological record, but it can also b...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.22544
更新日期:2014-08-01 00:00:00
abstract::The techniques of dental histology provide a method for reconstructing much of the life history of an individual, as accentuated increments visible in polarized light microscopy record incidents of physiological stress during the formation of dental tissues. Combined with counts of the normal periodic growth increment...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.10089
更新日期:2002-07-01 00:00:00
abstract::Parameters of Malécot's isolation-by-distance model are estimated for biological (anthropometric head and body dimensions, morphometric dimensions of metacarpal bones, quantitative and qualitative dermatoglyphic traits, and physiological/cardiorespiratory/variables) and linguistic distances and migrational kinship on ...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330740313
更新日期:1987-11-01 00:00:00
abstract::Recent molecular and morphological surveys suggest that mangabeys do not represent a monophyletic group. Specifically, Cercocebus is the sister taxon of Mandrillus, whereas Lophocebus forms an unresolved trichotomy with Papio and Theropithecus. The Cercocebus-Mandrillus clade is characterized by skeletal and dental ad...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.20621
更新日期:2007-09-01 00:00:00