sorry i put my question in the wrong place. ok my question is can you tell me if i did this correctly. my experiment was about how can you tell if the person is lying by his body language. will my independent variable be when i interview a person on a dim light while i interview others on a normal light. then my dependent variable will be what happen or what change on the answers of all that was interviewed. the controlled variable willbe the questions to each person will be the same. is this right? because this is how i understand it. please help i really need the answer badly! thanks for all your help !!!!!

Multiple Post.

Sra

It seems like you have a good understanding of the variables in your experiment. Let me break it down for you to clarify:

Independent variable: In your case, the independent variable is the level of lighting during the interview. You plan to have one group being interviewed in dim light, while the other group is interviewed in normal light. This is the variable that you are deliberately changing or manipulating in your experiment.

Dependent variable: The dependent variable is the outcome or result that you will be measuring. In your experiment, you want to determine if the person's body language differs depending on the lighting conditions. Therefore, the change in the answers or the body language observed during the interviews is your dependent variable. You will be comparing the differences in responses and behaviors between the two lighting conditions.

Controlled variables: Controlled variables are factors that you keep constant throughout your experiment. In your case, you mentioned that the questions asked to each person will be the same. This is a controlled variable since it ensures that the only difference between the two groups is the lighting condition. By keeping all other factors constant, you are able to isolate the effect of the independent variable on the dependent variable.

Overall, your understanding of the variables in your experiment seems to be correct. Just remember to carefully control any other variables that could potentially influence the participants' responses, such as the setting, the interviewer's behavior, or the order in which the interviews are conducted.