"Epidemiological study" type of research studies populations and is often used to search for correlations or associations between dietary habits and disease incidence.
<u>Explanation:</u>
"Epidemiology" is the study about human's diseases or other animal populations to detect and analyse how, when and where they occur. The study try to determine which factors are associated with disease termed as risk factors and which factors can protect people or animals from disease termed as protective factors.
Therefore "Epidemiological study" type of research studies populations and is often used to search for correlations or associations between dietary habits and disease incidence.
Where are the primary and secondary documents?
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<span>The tokens act as secondary reinforcers. A secondary reinforcer is one that is associated with a primary reinforcer. In order for the reinforcer to achieve its objective, the person has to learn the association between the primary and the secondary reinforcer. For example, money is a secondary reinforcer, food is a primary reinforcer. When we see the money we are motivated by the association we make; <span>buy food with the money.
I hope my answer can help you.
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