Experimental research, often considered to be the “gold standard” in research designs, is one of the most rigorous of all research designs. In this design, one or more independent variables are manipulated by the researcher (as treatments), subjects are randomly assigned to different treatment levels (random assignment), and the results of the treatments on outcomes (dependent variables) are observed. The unique strength of experimental research is its internal validity (causality) due to its ability to link cause and effect through treatment manipulation, while controlling for the spurious effect of extraneous variable.
Experimental research is best suited for explanatory research (rather than for descriptive or exploratory research), where the goal of the study is to examine cause-effect relationships. It also works well for research that involves a relatively limited and well-defined set of independent variables that can either be manipulated or controlled. Experimental research can be conducted in laboratory or field settings. Laboratory experiments , conducted in laboratory (artificial) settings, tend to be high in internal validity, but this comes at the cost of low external validity (generalizability), because the artificial (laboratory) setting in which the study is conducted may not reflect the real world. Field experiments , conducted in field settings such as in a real organization, and high in both internal and external validity. But such experiments are relatively rare, because of the difficulties associated with manipulating treatments and controlling for extraneous effects in a field setting.
Experimental research can be grouped into two broad categories: true experimental designs and quasi-experimental designs. Both designs require treatment manipulation, but while true experiments also require random assignment, quasi-experiments do not. Sometimes, we also refer to non-experimental research, which is not really a research design, but an all-inclusive term that includes all types of research that do not employ treatment manipulation or random assignment, such as survey research, observational research, and correlational studies.
The answer to this question is Haemoglobin
Cones sense color and intensity or a light, rods and only sense color is true
Answer:
Because of the difference in digestive system.
Explanation:
RUMINANT ANIMALS : they are animals that chew their cud. They are characterized by the fact that they have four different compartments in their stomach. Common examples are goats, cows/cattles, sheep, etc
SWINE AND POULTRY ANIMALS: while swine mainly refer to pig(animal), poultry animals are different types of birds.
Ruminant animals, swines and poultry animals have different formulations for their diet.
The formulation of ruminant diets and rations is somewhat different in procedures from the formulation of swine and poultry diets because of the reason below;
=> The main thing here is because of their digestive system. Ruminant animals have well built digestive system which enables them to be able to eat fibrous plants and ferment roughages which are used for energy which is no so in swines and poultry animals.