Examlex
Given the same frequency of reinforcement, _____ schedules generate higher rates of responding than do _____ schedules.
Potassium-40
A radioactive isotope of potassium used in dating geological materials, as it decays into argon-40 over a known period of time.
Carbon-14
A radioactive isotope of carbon used in dating organic materials and archaeological objects through radiocarbon dating methods.
Carbon-12
A stable isotope of carbon with six protons and six neutrons, used as a standard in atomic mass units.
Indicates
Points out, shows, or is a sign of something; often used to specify an important relationship or evidence in a given context.
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