Final answer:
In experimental design, favoring between-subjects means that the quasi-independent variable (quasi-IV) is built into the subject being studied, and different subjects are assigned to different treatment groups. This method helps control for factors such as the long-term effect of the manipulation, inability to use the measure more than once, and demand characteristics.
Step-by-step explanation:
In experimental design, favoring between-subjects means that the quasi-independent variable (quasi-IV) is built into the subject being studied. This occurs when participants are assigned to different treatment groups and each group goes through all phases of the experiment.
For example, if you are studying the effect of a new teaching method on student performance, you would assign some students to the experimental group and others to the control group. The control group serves as the 'vanilla' or plain condition, receiving no experimental manipulation.
Favoring between-subjects is beneficial when the effect of the manipulation lasts a long time or when the measure cannot be used more than once on the same subject. It is also useful when there is a risk of demand characteristics, which are cues that may influence participants' behavior in an experiment. By assigning different subjects to different treatment groups, these factors can be controlled.