. A researcher wants to find out if spending an hour outside every day promotes increases in mood and mental health. To study this, the researcher selects individuals in a specific age group and divides them into two groups. One group is told not to spend persistent time outside. The other group is instructed to spend an hour of uninterrupted time outside. This model would best reflect a design.

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A researcher wants to find out if spending an hour outside every day promotes increases in mood and mental health. To study this, the researcher selects individuals in a specific age group and divides them into two groups. One group is told not to spend persistent time outside. The other group is instructed to spend an hour of uninterrupted time outside. This model would best reflect an Experimental design.

Let's remember that in psychology or sociology, experimental design means that the people who participate in the experiment are grouped into different teams or sides

Most of the time, researchers split the participants into two groups because one group is the so-called control group and the experimental group. All the variables are introduced into the experimental group to find the results.