Dr. Branch would like to study the relationship between room lighting and college students' test performance. He randomly assigns college students to two groups. The first group takes an exam in a dimly lit room and the second group takes the same exam in a regularly lit room. What is the independent variable?

The independent variable is the lighting intensity.

When you want to check the influence of one phenomenon on another, it is necessary to use two variables. A dependent variable and another independent variable.

With these two types of variables, it is possible to know the influence of one (independent) variable on another (dependent).

For example, the independent variable in the situation presented is light intensity. This variable will influence the result obtained in the dependent variable, that is, the performance of students on tests.

While the dependent variable represents different results (it changes depending on the independent variable), the independent variable does not change as a result of other variables.

According to the above, it can be inferred that the independent variable that Dr. Branch is using is the lightning intensity.

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answer: musical connotation

leonard b. meyer (1918-2007) was an american composer, author and philosopher. his work emotion and meaning in music is perhaps the first major treatise on music. it is a philosophical and psychological work, greatly influenced by koffka (one of the major proponents of gestalt psychology). his work deals with the problem of musical meaning and musical communication.