Simon N. Chapman
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View article: Adaptation to paternal leave policies in Finnish municipalities: changing gender norms and cross-border policy legacies
Adaptation to paternal leave policies in Finnish municipalities: changing gender norms and cross-border policy legacies Open
Countries where public opinion tends to favour gender equality tend to invest in policies supporting the dual-earner family model or the earner–carer family model, while countries where public opinion is more inclined to support conservati…
View article: Menopause has not evolved as a general trait in mammals: A response to ‘Do mammals have menopause?’
Menopause has not evolved as a general trait in mammals: A response to ‘Do mammals have menopause?’ Open
Reproductive senescence is widespread across mammals, but only a small number of species have physiological reproductive cessation and an extended post-reproductive lifespan. A recent commentary in Cell by Winkler & Goncalves (2023) sugges…
View article: Grandmother Effects Over the Finnish Demographic Transition
Grandmother Effects Over the Finnish Demographic Transition Open
Demographic transitions are defining events for human societies, marking shifts from natural mortality and fertility rates to the low rates seen in industrialised populations. These transitions can affect trait evolution through altering t…
View article: Grandmother presence improved grandchild survival against childhood infections but not vaccination coverage in historical Finns
Grandmother presence improved grandchild survival against childhood infections but not vaccination coverage in historical Finns Open
Grandmother presence can improve the number and survival of their grandchildren, but what grandmothers protect against and how they achieve it remains poorly known. Before modern medical care, infections were leading causes of childhood mo…
View article: Grandparental co-residence and grandchild survival: the role of resource competition in a pre-industrial population
Grandparental co-residence and grandchild survival: the role of resource competition in a pre-industrial population Open
Although grandparents are and have been important alloparents to their grandchildren, they are not necessarily only beneficial but can also compete with grandchildren over limited resources. Competition over parental care or other resource…
View article: Sex, age, and family structure influence dispersal behaviour after a forced migration
Sex, age, and family structure influence dispersal behaviour after a forced migration Open
Dispersal does not only mean moving from one environment to another, but can also refer to shifting from one social group to another. Individual characteristics such as sex, age and family structure might influence an individual's propensi…
View article: Correction to: Distinguishing between determinate and indeterminate growth in a long-lived mammal
Correction to: Distinguishing between determinate and indeterminate growth in a long-lived mammal Open
View article: Offspring fertility and grandchild survival enhanced by maternal grandmothers in a pre-industrial human society
Offspring fertility and grandchild survival enhanced by maternal grandmothers in a pre-industrial human society Open
View article: Will granny save me? Birth status, survival, and the role of grandmothers in historical Finland
Will granny save me? Birth status, survival, and the role of grandmothers in historical Finland Open
View article: Context-dependence of grandmother effects & selection on post-reproductive life
Context-dependence of grandmother effects & selection on post-reproductive life Open
In cooperatively breeding species, the amount of help provided and the outcomes of that help can vary greatly under different contexts, such as helper age, sex of the offspring, or age of the offspring. Contextual variation in the outcomes…
View article: Child volunteers in a women's paramilitary organization in World War II have accelerated reproductive schedules
Child volunteers in a women's paramilitary organization in World War II have accelerated reproductive schedules Open
View article: Asian elephants exhibit post-reproductive lifespans
Asian elephants exhibit post-reproductive lifespans Open
View article: Support for populist candidates in the 2016 presidential elections predicted by declining social capital and an increase in suicides.
Support for populist candidates in the 2016 presidential elections predicted by declining social capital and an increase in suicides. Open
Social relationships have far-reaching effects on both the mental and physical health of individuals and, consequently, the larger communities in which they live. Deteriorating social networks reflect rising alienation and social isolation…
View article: Maternal age at birth shapes offspring life‐history trajectory across generations in long‐lived Asian elephants
Maternal age at birth shapes offspring life‐history trajectory across generations in long‐lived Asian elephants Open
Advanced maternal age at birth can have pronounced consequences for offspring health, survival and reproduction. If carried over to the next generation, such fitness effects could have important implications for population dynamics and the…
View article: Limits to Fitness Benefits of Prolonged Post-reproductive Lifespan in Women
Limits to Fitness Benefits of Prolonged Post-reproductive Lifespan in Women Open
View article: MOESM2 of Asian elephants exhibit post-reproductive lifespans
MOESM2 of Asian elephants exhibit post-reproductive lifespans Open
Additional file 2. Dataset containing the changing lx and mx series of the population (1960-2018).
View article: MOESM1 of Asian elephants exhibit post-reproductive lifespans
MOESM1 of Asian elephants exhibit post-reproductive lifespans Open
Additional file 1. Dataset containing the lx and mx series of the population.
View article: Grandmotherhood across the demographic transition
Grandmotherhood across the demographic transition Open
Grandmothers provide key care to their grandchildren in both contemporary and historic human populations. The length of the grandmother-grandchild relationship provides a basis for such interactions, but its variation and determinants have…
View article: Limited support for the X-linked grandmother hypothesis in pre-industrial Finland
Limited support for the X-linked grandmother hypothesis in pre-industrial Finland Open
The level of kin help often depends on the degree of relatedness between a helper and the helped. In humans, grandmother help is known to increase the survival of grandchildren, though this benefit can differ between maternal grandmothers …
View article: Changes in Length of Grandparenthood in Finland 1790-1959
Changes in Length of Grandparenthood in Finland 1790-1959 Open
The importance of grandparents for their grandchildren is well-studied in several disciplines, and studies are now also addressing the potential effects of grandchildren on grandparental wellbeing. Any such effects are limited by the time …
View article: Is bigger better? The relationship between size and reproduction in female Asian elephants
Is bigger better? The relationship between size and reproduction in female Asian elephants Open
The limited availability of resources is predicted to impose trade‐offs between growth, reproduction and self‐maintenance in animals. However, although some studies have shown that early reproduction suppresses growth, reproduction positiv…
View article: Supplementary material from "Limited support for the X-linked grandmother hypothesis in pre-industrial Finland"
Supplementary material from "Limited support for the X-linked grandmother hypothesis in pre-industrial Finland" Open
The level of kin help in a species often depends on the degree of relatedness between a helper and the helped. In humans, grandmother help is known to increase the survival of grandchildren, though this benefit can differ between maternal …
View article: R code from Limited support for the X-linked grandmother hypothesis in pre-industrial Finland
R code from Limited support for the X-linked grandmother hypothesis in pre-industrial Finland Open
R code used for analyses
View article: Testing storage methods of faecal samples for subsequent measurement of helminth egg numbers in the domestic horse
Testing storage methods of faecal samples for subsequent measurement of helminth egg numbers in the domestic horse Open
Parasite infection status, intensity and resistance have traditionally been quantified via flotation techniques, but the need for immediate analysis following defecation imposes limitations and has led to the use of several faecal storage …
View article: How Big Is It Really? Assessing the Efficacy of Indirect Estimates of Body Size in Asian Elephants
How Big Is It Really? Assessing the Efficacy of Indirect Estimates of Body Size in Asian Elephants Open
Information on an organism's body size is pivotal in understanding its life history and fitness, as well as helping inform conservation measures. However, for many species, particularly large-bodied wild animals, taking accurate body size …
View article: Distinguishing between determinate and indeterminate growth in a long-lived mammal
Distinguishing between determinate and indeterminate growth in a long-lived mammal Open