population psychology
a subfield of psychology that studies the relationships between the characteristics and dynamics of human populations and the attitudes and behavior of individuals and groups. Representing an interface between psychology and demography, population psychology is particularly concerned with family planning and fertility regulation (i.e., reproductive behavior), high population density, and public policy development. Additional research topics include family formation and structure, migration, urbanization, mortality, and population education. Population psychology also encompasses the conceptualization of specific theoretical frameworks and methodological approaches for the study of population.