Related Experiment Video
Updated: Aug 3, 2026

08:38
Quantifying Human Monocyte Chemotaxis In Vitro and Murine Lymphocyte Trafficking In Vivo
Published on: October 30, 2017
Comparative demographic effects of Canadian-U.S. immigration flows
Summary
This study compares U.S. and Canadian residents born in the neighboring country, revealing similar characteristics. Migration patterns between Canada and the U.S. have shifted due to increased legal restrictions, moving from large economic flows to smaller, controlled movements.
Area of Science:
- Demography
- Sociology
- Economics
Background:
- Cross-border migration between Canada and the United States is a significant demographic phenomenon.
- Understanding the social and economic characteristics of these migrant populations is crucial for policy-making.
- Previous migration flows were largely driven by economic factors, similar to internal migration.
Purpose of the Study:
- To compare the social and economic characteristics of U.S. residents born in Canada with Canadian residents born in the U.S.
- To analyze the impact of changing legal restrictions on migration patterns between the two countries.
- To examine shifts in the nature of cross-border population movements over time.
Main Methods:
- Utilized special tabulations from the 1980 U.S. Census for U.S. residents born in Canada.
- Employed matching tabulations from the 1981 Canadian Census for Canadian residents born in the U.S.
- Comparative analysis of demographic, social, and economic variables between the two migrant groups.
Main Results:
- The two populations (U.S. born in Canada vs. Canadian born in U.S.) exhibit remarkable similarities.
- The predominant migration flow is from Canada to the United States.
- Social and economic characteristics reflect increased legal restrictions on migration over the past two decades.
Conclusions:
- Migration between Canada and the U.S. has evolved from large, economically motivated movements to smaller, more regulated international flows.
- Legal restrictions have significantly altered the nature and scale of cross-border population movements.
- The study highlights the dynamic interplay between policy, economics, and migration patterns.
Keywords:
AmericasBehaviorCanadaComparative StudiesDemographic FactorsDeveloped CountriesEconomic FactorsInternational MigrationMigrantsMigrationMigration PolicyMotivationNorth AmericaNorthern AmericaPolicyPopulationPopulation CharacteristicsPopulation DynamicsPopulation PolicyPsychological FactorsResearch MethodologySocial PolicyStudiesUnited StatesRelated Concept Videos
Mutation, Gene Flow, and Genetic Drift
In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).Mechanisms of Genetic VariationThe original sources of genetic variation are mutations,...
Surveys
Often, psychologists develop surveys as a means of gathering data. Surveys are lists of questions to be answered by research participants, and can be delivered as paper-and-pencil questionnaires, administered electronically, or conducted verbally. Generally, the survey itself can be completed in a short time, and the ease of administering a survey makes it easy to collect data from a large number of people.
Cross-Sectional Research
In cross-sectional research, a researcher compares multiple segments of the population at the same time. If they were interested in people's dietary habits, the researcher might directly compare different groups of people by age. Instead of following a group of people for 20 years to see how their dietary habits changed from decade to decade, the researcher would study a group of 20-year-old individuals and compare them to a group of 30-year-old individuals and a group of 40-year-old...
Genetic Drift
Natural selection—probably the most well-known evolutionary mechanism—increases the prevalence of traits that enhance survival and reproduction. However, evolution does not merely propagate favorable traits, nor does it always benefit populations.Life is not fair. A deer grazing contentedly in a field can have her meal cut tragically short by a bolt of lightning. If the doomed doe is one of only three in the population, 1/3 of the population’s gene pool is lost. Random events like this can...
Gene Flow
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
Applications 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...

