Sort each of the following claims into the corresponding category of research.

As pizza consumption increases so does a person's anger level.

Correlational Research or causal research?

A group that breathed pure oxygen had
better test performance than a group that
breathed normal air.

Correlational Research or causal research?

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People who eat breakfast most days tend to
have a higher GPA.

Correlational Research or causal research?

A group that consumed more caffeine
showed less ability to focus than a group that
consumed no caffeine.

Correlational Research or causal research?

As exercise rate increases, a person's
memory increases.

Correlational Research or causal research?

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3 answers

Correlational Research or causal research?
What’s the answer
As pizza consumption increases so does a person's anger level: Correlational Research

A group that breathed pure oxygen had better test performance than a group that breathed normal air: Causal Research

People who eat breakfast most days tend to have a higher GPA: Correlational Research

A group that consumed more caffeine showed less ability to focus than a group that consumed no caffeine: Causal Research

As exercise rate increases, a person's memory increases: Correlational Research