Bruce Floyd
Biographic Data
| ID | 3646239 |
|---|---|
| NAME | Bruce Floyd |
| GIVEN NAMES | Bruce |
| FAMILY NAME | Floyd |
| SIGNATURE | FLOYD B |
| AFFILIATIONS | University of Auckland |
| ORCID | 0000-0002-6092-0787 |
| VERIFIED | Yes |
| TOTAL WORKS | 27 |
| TOTAL CITATIONS | 92 |
| WORKS AS AUTHOR | 27 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1998 |
| LATEST PUBLICATION YEAR | 2024 |
| H-INDEX | 5 |
Finger Fluting in Prehistoric Caves
Finger flutings are channels drawn in soft sediments covering walls, floors and ceilings of some limestone caves in Europe and Australia and in some cases date as far back as 50,000 years ago. Initial research focused on why they were made, but more recently, as part of a growing interest in the individual in the past, researchers began asking questions about who made them. This shift in direction has led to claims that by measuring the width of …
Longitudinal changes in juvenile and adolescent body mass indices before, during, and after the Covid ‐19 lockdown in New Zealand
Results are mostly consistent with the "structured days" hypothesis, but challenge the bidirectional hypothesis as defined. Further research better characterizing risks of gains in adiposity are needed
Technical note
We present a novel method to estimate original crown height (OCH) for worn human mandibular canines using a cubic regression equation based on ratios of worn crown height and exposed dentin. This method may help alleviate issues frequently presented by worn teeth in dental analyses, including those in bioarchaeology. Mandibular canines ( n = 28) from modern day New Zealand and English populations were selected. Crown height and dentin thickness w…
An inconstant biorhythm
OBJECTIVES: Human tooth enamel retains evidence of growth in the form of Retzius lines. The number of daily growth increments between the regularly occurring lines defines their repeat interval, or periodicity. Retzius periodicity is often incorporated into enamel formation times, age-at-death reconstructions, or used to provide a basis from which to explore an underlying biorhythm. Biological anthropologists typically assume that RP remains cons…
Using portable X-ray fluorescence (pXRF) spectrometry to discriminate burned skeletal fragments
Uneasy Neighbours
A summary is not available for this content so a preview has been provided. Please use the Get access link above for information on how to access this content
Social group dynamics predict stress variability among children in a New Zealand classroom
Factors influencing diurnal variation in height among adults
How much impact do gains in height have on shoulder breadths within Taiwanese families
Objectives This study investigates allometric changes in shoulder breadths relative to changes in stature arising from rapidly changing developmental circumstances within 107 Taiwanese families. It speaks to broader issues related to the extent of phenotypic plasticity of body breadths humans are capable of in response to reductions in developmental stressors. Methods An examination of relationships between shoulder breadth and height within indi…
The influence of variation in parental height dimorphism on same‐sex parent‐offspring height differences
OBJECTIVE: This study evaluates how adjusting for parental height dimorphism influences height differences among parents and same-sex offspring distinguished by parents' early backgrounds. PARTICIPANTS AND METHODS: Regression analyses using data from independent groups of Taiwanese families, 56 with sons and 51 with daughters, evaluate how adjusting for parental height dimorphism influences same-sex parent-offspring height differences among famil…
The magnitude of changes in linear growth within Taiwanese families
OBJECTIVE: This study evaluates competing hypotheses about implications of greater female growth canalization for differences in male and female growth as developmental settings improve. PARTICIPANTS AND METHODS: Intergenerational declines in gender bias and rapid economic growth in Taiwan permit assessment of the two hypotheses using anthropometric and background information from 107 Taiwanese parents and their young adult offspring. Differences…
Estimating striae of Retzius periodicity nondestructively using partial counts of perikymata
Accurate age estimations for enamel formation and the timing of enamel hypoplasia have traditionally only been available through histological analyses of dental thin sections, which is a difficult and destructive process. However, an association between striae of Retzius periodicity, crucial for accurate aging, and the total number of striae in imbricational enamel has been reported in the literature. This means periodicity can be estimated nonde…
Taphonomic analysis of Bronze Age burials in Mongolian khirigsuurs
Enamel extension rate patterns in modern human teeth
How did Remote Oceanic peoples get so big
The application of 3D laser scanning technology to the assessment of ordinal and mechanical cortex quantification in lithic analysis
Associations between height, body mass, and frequency of decayed, extracted, and filled deciduous teeth among two cohorts of Taiwanese first graders
In this study, heights, weights, and numbers of decayed, extracted, and filled (DEF) deciduous teeth of 300 first‐graders from a less affluent area of Taipei were compared with those of 277 first‐graders from a more affluent one. Parents of all children self‐identified as having ancestors from Fujian. This study tested the hypothesis that synergisms between under‐nutrition and disease form part of a causal pathway contributing to the risk of deci…
Clinal variation in Chinese height and weight
Intergenerational gains in relative knee height as compared to gains in relative leg length within Taiwanese families
Evidence indicates that variation in relative leg length (RLL) is a sensitive indicator of early childhood circumstances, but research presents conflicting evidence of how lower leg growth contributes to variability. This study investigates the extent of intergenerational changes in subischial leg length and knee height relative to stature among father–son, mother–daughter, and midparent–offspring pairs. These changes and differences in the exten…
Focused life history data and linear enamel hypoplasia to help explain intergenerational variation in relative leg length within Taiwanese families
This study first examines the hypothesis that significant intergeneration increases in stature within 85 Taiwanese families in two study locations were primarily the result of increases in subischial leg length. It then evaluates a second hypothesis that independent assessments of the extent of intergenerational change in childhood environments within these families helped account for parent-offspring differences in relative leg length. Childhood…
Linear enamel hypoplasia and growth in an Australian Aboriginal community
Results help explain previously documented, and apparently contradictory, outcomes of settlement processes. Rapid and relatively undelayed late childhood and adolescent growth associated with catch-up in height occurred through a confluence of increasing early childhood systemic stress followed by increases in net energy consumption that probably increased as children aged
Heights and Weights of Da-an Boys
This study further examined the negative association between boys’ growth and the presence of sisters within a relatively affluent community in Taipei, Taiwan. Among 596 boys born in 1976–77, differences in height and log-transformed weight were judged using analysis of covariance (ANCOVA) with measurement age as a covariate, and parental education level (four levels), number of sisters (0, 1, 2 or 3+) and number of brothers (0, 1, 2+) as predict…
Patrilineal Family Values, Family Planning and Variation in Stature Among Taiwanese Six-Year-Olds
It has been argued that patrilineal joint family systems tend to bias family planning decisions in favour of sons. A simple model suggests that in such societies, any given son will be more highly valued by his parents (1) the fewer his brothers and (2) the earlier his birth is in the brother series. A daughter's value will be greater (1) the fewer brothers she has and (2) the earlier her birth is relative to other sisters. This study first addre…
Epidemiology of enamel hypoplasia in deciduous teeth
This study is based on seven samples of school children (n = 516) from rural (five groups) and urban (two groups) settings in western Maharashtra, India. Height and weight were recorded for each subject. Intra-oral observation of the labial surface of maxillary and mandibular anterior teeth was conducted with a low power (3x) illuminated hand lens. Presence of enamel hypoplasia was recorded on a dental chart by drawing the size and location of th…
Evidence of age‐related responses to short‐term environmental variation
Cross-sectional heights and weights collected by Taiwan's Ministry of Education since 1964, and reported separately for Taipei and rural townships from 1969 through 1990, were used to test the hypothesis that in Taiwan the degree to which increments of change in height and weight of urban or rural boys and girls tracked each other from year to year was a function of sex and age-related capacities to respond to common environmental forces. Five te…
Enamel extension rate patterns in modern human teeth
The application of 3D laser scanning technology to the assessment of ordinal and mechanical cortex quantification in lithic analysis
Taphonomic analysis of Bronze Age burials in Mongolian khirigsuurs
Estimating striae of Retzius periodicity nondestructively using partial counts of perikymata
Accurate age estimations for enamel formation and the timing of enamel hypoplasia have traditionally only been available through histological analyses of dental thin sections, which is a difficult and destructive process. However, an association between striae of Retzius periodicity, crucial for accurate aging, and the total number of striae in imbricational enamel has been reported in the literature. This means periodicity can be estimated nonde…
An inconstant biorhythm
OBJECTIVES: Human tooth enamel retains evidence of growth in the form of Retzius lines. The number of daily growth increments between the regularly occurring lines defines their repeat interval, or periodicity. Retzius periodicity is often incorporated into enamel formation times, age-at-death reconstructions, or used to provide a basis from which to explore an underlying biorhythm. Biological anthropologists typically assume that RP remains cons…
Using portable X-ray fluorescence (pXRF) spectrometry to discriminate burned skeletal fragments
The magnitude of changes in linear growth within Taiwanese families
OBJECTIVE: This study evaluates competing hypotheses about implications of greater female growth canalization for differences in male and female growth as developmental settings improve. PARTICIPANTS AND METHODS: Intergenerational declines in gender bias and rapid economic growth in Taiwan permit assessment of the two hypotheses using anthropometric and background information from 107 Taiwanese parents and their young adult offspring. Differences…
Finger Fluting in Prehistoric Caves
Finger flutings are channels drawn in soft sediments covering walls, floors and ceilings of some limestone caves in Europe and Australia and in some cases date as far back as 50,000 years ago. Initial research focused on why they were made, but more recently, as part of a growing interest in the individual in the past, researchers began asking questions about who made them. This shift in direction has led to claims that by measuring the width of …
Associations between height, body mass, and frequency of decayed, extracted, and filled deciduous teeth among two cohorts of Taiwanese first graders
In this study, heights, weights, and numbers of decayed, extracted, and filled (DEF) deciduous teeth of 300 first‐graders from a less affluent area of Taipei were compared with those of 277 first‐graders from a more affluent one. Parents of all children self‐identified as having ancestors from Fujian. This study tested the hypothesis that synergisms between under‐nutrition and disease form part of a causal pathway contributing to the risk of deci…
The contribution of adolescent growth to shorter adult statures among girls of Chinese ancestry
Researchers have hypothesized that shorter mean statures at onset of the adolescent spurt and more rapid skeletal maturation during adolescence among East Asian populations contribute significantly to their shorter mean adult statures compared to European populations. The goal of this study is to use longitudinal height growth data modeled with the Preece-Baines Model 1 (PB1) function to examine the relative importance of adolescent growth to pop…
Can socioeconomic factors account for ?atypical? correlations between timing, peak velocity, and intensity of adolescent growth in Taiwanese girls?
This study uses longitudinal height records of girls in two urban and one rural area in Taiwan. Individual height records were modeled with the Preece-Baines Model 1 (PB1) function to test two related hypotheses: 1) Taiwanese students who experienced a relatively stable, affluent growth environment from an early age, as judged from parental education and stability of residence type, will have a pattern of correlations for the timing and intensity…
Epidemiology of enamel hypoplasia in deciduous teeth
This study is based on seven samples of school children (n = 516) from rural (five groups) and urban (two groups) settings in western Maharashtra, India. Height and weight were recorded for each subject. Intra-oral observation of the labial surface of maxillary and mandibular anterior teeth was conducted with a low power (3x) illuminated hand lens. Presence of enamel hypoplasia was recorded on a dental chart by drawing the size and location of th…
Evidence of age‐related responses to short‐term environmental variation
Cross-sectional heights and weights collected by Taiwan's Ministry of Education since 1964, and reported separately for Taipei and rural townships from 1969 through 1990, were used to test the hypothesis that in Taiwan the degree to which increments of change in height and weight of urban or rural boys and girls tracked each other from year to year was a function of sex and age-related capacities to respond to common environmental forces. Five te…
Patrilineal Family Values, Family Planning and Variation in Stature Among Taiwanese Six-Year-Olds
It has been argued that patrilineal joint family systems tend to bias family planning decisions in favour of sons. A simple model suggests that in such societies, any given son will be more highly valued by his parents (1) the fewer his brothers and (2) the earlier his birth is in the brother series. A daughter's value will be greater (1) the fewer brothers she has and (2) the earlier her birth is relative to other sisters. This study first addre…
Heights and Weights of Da-an Boys
This study further examined the negative association between boys’ growth and the presence of sisters within a relatively affluent community in Taipei, Taiwan. Among 596 boys born in 1976–77, differences in height and log-transformed weight were judged using analysis of covariance (ANCOVA) with measurement age as a covariate, and parental education level (four levels), number of sisters (0, 1, 2 or 3+) and number of brothers (0, 1, 2+) as predict…
Linear enamel hypoplasia and growth in an Australian Aboriginal community
Results help explain previously documented, and apparently contradictory, outcomes of settlement processes. Rapid and relatively undelayed late childhood and adolescent growth associated with catch-up in height occurred through a confluence of increasing early childhood systemic stress followed by increases in net energy consumption that probably increased as children aged
Focused life history data and linear enamel hypoplasia to help explain intergenerational variation in relative leg length within Taiwanese families
This study first examines the hypothesis that significant intergeneration increases in stature within 85 Taiwanese families in two study locations were primarily the result of increases in subischial leg length. It then evaluates a second hypothesis that independent assessments of the extent of intergenerational change in childhood environments within these families helped account for parent-offspring differences in relative leg length. Childhood…
Clinal variation in Chinese height and weight
Intergenerational gains in relative knee height as compared to gains in relative leg length within Taiwanese families
Evidence indicates that variation in relative leg length (RLL) is a sensitive indicator of early childhood circumstances, but research presents conflicting evidence of how lower leg growth contributes to variability. This study investigates the extent of intergenerational changes in subischial leg length and knee height relative to stature among father–son, mother–daughter, and midparent–offspring pairs. These changes and differences in the exten…
The application of 3D laser scanning technology to the assessment of ordinal and mechanical cortex quantification in lithic analysis
Associations between height, body mass, and frequency of decayed, extracted, and filled deciduous teeth among two cohorts of Taiwanese first graders
In this study, heights, weights, and numbers of decayed, extracted, and filled (DEF) deciduous teeth of 300 first‐graders from a less affluent area of Taipei were compared with those of 277 first‐graders from a more affluent one. Parents of all children self‐identified as having ancestors from Fujian. This study tested the hypothesis that synergisms between under‐nutrition and disease form part of a causal pathway contributing to the risk of deci…
How did Remote Oceanic peoples get so big
Taphonomic analysis of Bronze Age burials in Mongolian khirigsuurs
Enamel extension rate patterns in modern human teeth
Estimating striae of Retzius periodicity nondestructively using partial counts of perikymata
Accurate age estimations for enamel formation and the timing of enamel hypoplasia have traditionally only been available through histological analyses of dental thin sections, which is a difficult and destructive process. However, an association between striae of Retzius periodicity, crucial for accurate aging, and the total number of striae in imbricational enamel has been reported in the literature. This means periodicity can be estimated nonde…
The magnitude of changes in linear growth within Taiwanese families
OBJECTIVE: This study evaluates competing hypotheses about implications of greater female growth canalization for differences in male and female growth as developmental settings improve. PARTICIPANTS AND METHODS: Intergenerational declines in gender bias and rapid economic growth in Taiwan permit assessment of the two hypotheses using anthropometric and background information from 107 Taiwanese parents and their young adult offspring. Differences…
Factors influencing diurnal variation in height among adults
How much impact do gains in height have on shoulder breadths within Taiwanese families
Objectives This study investigates allometric changes in shoulder breadths relative to changes in stature arising from rapidly changing developmental circumstances within 107 Taiwanese families. It speaks to broader issues related to the extent of phenotypic plasticity of body breadths humans are capable of in response to reductions in developmental stressors. Methods An examination of relationships between shoulder breadth and height within indi…
The influence of variation in parental height dimorphism on same‐sex parent‐offspring height differences
OBJECTIVE: This study evaluates how adjusting for parental height dimorphism influences height differences among parents and same-sex offspring distinguished by parents' early backgrounds. PARTICIPANTS AND METHODS: Regression analyses using data from independent groups of Taiwanese families, 56 with sons and 51 with daughters, evaluate how adjusting for parental height dimorphism influences same-sex parent-offspring height differences among famil…
Social group dynamics predict stress variability among children in a New Zealand classroom
Uneasy Neighbours
A summary is not available for this content so a preview has been provided. Please use the Get access link above for information on how to access this content
Technical note
We present a novel method to estimate original crown height (OCH) for worn human mandibular canines using a cubic regression equation based on ratios of worn crown height and exposed dentin. This method may help alleviate issues frequently presented by worn teeth in dental analyses, including those in bioarchaeology. Mandibular canines ( n = 28) from modern day New Zealand and English populations were selected. Crown height and dentin thickness w…
An inconstant biorhythm
OBJECTIVES: Human tooth enamel retains evidence of growth in the form of Retzius lines. The number of daily growth increments between the regularly occurring lines defines their repeat interval, or periodicity. Retzius periodicity is often incorporated into enamel formation times, age-at-death reconstructions, or used to provide a basis from which to explore an underlying biorhythm. Biological anthropologists typically assume that RP remains cons…
Using portable X-ray fluorescence (pXRF) spectrometry to discriminate burned skeletal fragments
Biology (16 works) · Demography (16 works) · Medicine (15 works) · Forensic Anthropology and Bioarchaeology Studies (11 works) · Mathematics (10 works) · Statistics (8 works) · Dentistry (7 works) · Geography (7 works) · Psychology (7 works) · Sociology (7 works)