A-B-A-B design could provide the most valid non intervention measure with demonstration of experimental control.
In statistics, the experimental design, also known as the design of experiment (DOE), is described as the layout of an information-gathering experiment in which a variation may or may not be present. Typically, controlled experiments use this phrase. In order to make the results more reliable, these tests minimize the impacts of the variable. In this design, a group of people, plants, animals, etc. may participate in an experimental unit's procedure.
Pre-experimental research designs are the most straightforward kind of experimental research designs in statistics. Following the identification of some factors as causes and effects, a group or groups are kept under observation in this method. Typically, this approach is used to determine whether the targeted group need additional research. This is the reason why this procedure is regarded as being economical.
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The "mirror test" consists of painting a red spot on the baby's forehead or nose, large enough so that he/she/they can see it easily, and place it in front of a mirror. If the child tries to touch the reflex, it means that he/she/they do not understand that the image is his/her/their own. But if /he/she/they try to clean or touch the spot on her face, it's because he/she/they already aware of her image.
The correct answer is <span>intervention by health and social welfare professionals.
In case of domestic violence, the victim needs help, but so does the person committing that violence. According to advocates of the medical model of domestic violence, here is where health and social welfare professionals can help. They can provide help when it comes to </span><span>physical, emotional, and psychological injuries that the victim has surely gone through.</span>
The blank is federal government because they had to pave the way and let the future presidents see the best way in which the federal government would work.