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When a Researcher Has Greater Control Over the Selection of Participants

question 49

Multiple Choice

When a researcher has greater control over the selection of participants and the independent variables,this is referred to as a(n) ______ experiment,and when the researcher has less control over the independent variables,this is referred to as a/an ______ experiment.


Definitions:

Demographic Transition

A model that describes the change from high birth and death rates to low birth and death rates as a country develops from a pre-industrial to an industrialized economic system.

Death Rates

The number of deaths per unit of population in a given time period, often used as an indicator of health and well-being in a community.

Birthrates

The ratio of live births in an area to the population of that area; expressed per 1000 population per year.

Infant And Child Mortality

The death rate of infants and children under a certain age, often used as an indicator of health and development in a population.

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