Related Experiment Video
Updated: Aug 12, 2026
08:46
Fertility Preservation Through Oocyte Vitrification: Clinical and Laboratory Perspectives
Published on: September 16, 2021
Fertility in England and Wales: a fifty-year perspective
1Department of Social Policy and administration, London School of Economics and Political Science.
Population Studies
|November 1, 1996
Summary
This study corrects past demographic analysis of fertility trends in England and Wales since 1938. It reinterprets the baby boom and baby bust using improved measurement tools for fertility behavior.
Area of Science:
- Demography
- Population Studies
- Social Statistics
Background:
- Historical analysis of fertility trends in England and Wales is crucial for understanding population dynamics.
- Previous demographic studies have lacked rigorous application of available measurement tools since the 1950s.
- Accurate measurement of fertility is essential for reliable population projections and policy-making.
Observation:
- Fertility levels and trends in England and Wales since 1938 are detailed, with a broader historical overview.
- Analysis highlights the failure of demographers to utilize advanced measurement tools for fertility analysis.
- Period measures and period parity progression ratios require adjustment for accurate interpretation.
Findings:
- The study corrects errors in past fertility analysis by applying underutilized measurement tools.
- Reinterpretation of the 'baby boom' and 'baby bust' periods is provided based on corrected data.
- Established clearer accounts of fertility trends, linking them to contemporary estimates.
Implications:
- Improved demographic analysis can prevent gross errors in understanding fertility behavior.
- Accurate historical fertility data informs future population projections and social planning.
- Understanding past fertility shifts provides insights into future fertility prospects and potential policy interventions.
More Related Videos
Related Concept Videos
01:29Life Histories
Constrained by limited energy and resources, organisms must compromise between offspring quantity and parental investment. This trade-off is represented by two primary reproductive strategies; K-strategists produce few offspring but provide substantial parental support, whereas r-strategists produce much progeny that receives little care. These strategies are related to an organism’s survival likelihood across its lifespan, which is represented by a survivorship curve. Three general types of...
02:20Longitudinal Research
Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
01:21Nondisjunction
Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate correctly and move to the opposite poles of the cells. This produces daughter cells with abnormal chromosome numbers. Nondisjunction is common during anaphase I or anaphase II of meiosis. Mutations in synaptonemal complex proteins that attach homologous chromosomes increase the chances of nondisjunction in anaphase I of meiosis I. In contrast, mutations in topoisomerases and condensins that hold sister...
01:23Infertility in Males
Male infertility affects millions of couples worldwide, arising from various factors that impact different stages of the reproductive process. An endocrine imbalance resulting from conditions like hypogonadism, Klinefelter syndrome, or pituitary disorders can disrupt hormone levels and reduce sperm production. Testicular defects, such as tumors, cryptorchidism, atrophic testes, abnormal sperm morphology, and low sperm count or motility, may arise due to genetic factors, structural...
01:28Infertility in Females
Female infertility is defined as the inability to conceive after a year of regular, unprotected intercourse and affects about 10–15% of couples worldwide. The primary cause of female infertility is ovulatory disorders, which hinder the release of eggs. These disorders can be classified as hypothalamic amenorrhea, polycystic ovarian syndrome (PCOS), premature ovarian failure, and hyperprolactinemic anovulation disorders.
Endometriosis, a condition characterized by abnormal growth of endometrial...
Endometriosis, a condition characterized by abnormal growth of endometrial...
01:22Applications of Life Tables
Life tables are versatile across various fields, providing a quantitative basis for analyzing mortality and survival rates. Whether used by demographers, actuaries, epidemiologists, or sociologists, life tables offer valuable insights into the dynamics of life and death, facilitating informed decisions in public health, insurance, conservation, and beyond. Their broad applicability highlights the interconnectedness of demographic data with practical outcomes in everyday life and strategic...