Behavioral research dependent variables

For example, suppose a researcher wanted to test the effect of vitamin A on the ability of rats to see in dim light. The independent variable would be the dose of Vitamin A added to the rats diet. The dependent variable would be the intensity of light that causes the rats to react. All other factors, such as time, temperature, age, water given to the rats, the other nutrients given to the rats, and similar factors, are held constant. Chemists sometimes do short experiments just to see what happens or to see what products a certain reaction produces. Often, these are not formal experiments. Rather they are ways of making additional observations about the behavior of matter. 

Antioxidant behavior is more complex when evaluated in emulsions than in oils because more variables influence lipid oxidation including emulsifier, pH, and buffer systems. Hence, limited research has been done so far to systematically evaluate antioxidant activity with respect to the interaction between these system dependent variables. Natural antioxidants have been particularly difficult to evaluate in oils and emulsions because of the complex interfacial phenomena affecting the partition of the antioxidants in the different phases. ... 

The combination of water-in-oil microemulsion and SCFs is a promising topic and may find more applications with some interesting advantages by utilizing the unique properties of SCFs. These include pressure-dependent variables such as viscosity, density, and diffusion rate, as well as the ability to readily manipulate the P-T phase behavior in the multicomponent micelle systems [13]. Much of the current research efforts in this area have been directed toward the SCF-continuous microemulsions. 

Experimemal evidence gathered by Winsor and scores of other researchers afterward have shown that as a field variable (one of the formulation variables or temperature) is changed as in Fig. 7, the phase behavior diagram exhibits a continuous transition from type I to type II passing through type HI, or vice versa, depending on the selected scan variable (11.22.25-27). 

Stage 1 To create alternatives. For this research, the alternatives smdied depended on the combination of six types of sheep breed (Dorper, Damara, Pelibuey, Katahdin, Blackbelly, and Suffolk), an initial number of ewes (between 100 and 300), the planning horizon (between 2 and 10 years), and two types of sales ( on-the-hoof and carcass). We have considered these four variables as key variables, due to the rest of the variables behavior depends on them. 

On the road studies fall into two general types those that involve some manipulation of the situation, and thus an independent variable is actually manipulated and those that simply observe behavior of unsuspecting drivers under various naturally occurring situations, d thus all variables - independent and dependent - are not under direct control of the researcher. 

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