If my project is about a lie detecting project waht would be my independent, dependent, and controlled variable?

In order to determine the independent, dependent, and controlled variables in your lie detecting project, let's break down the components.

The independent variable can be defined as the variable that you, as the researcher, manipulate or control in order to observe its effect on the dependent variable. In your case, since your project is related to lie detection, the independent variable could be the stimulus or method used to elicit lies. For example, you might use different questioning techniques, visual stimuli, or physiological measures as independent variables to test their impact on a person's ability to detect lies.

The dependent variable, on the other hand, is the observable and measurable factor that you expect to be influenced by the independent variable. In your lie detecting project, the dependent variable would be the accuracy of lie detection. You could measure this by comparing the number of correctly detected lies to the number of false positives or false negatives.

Lastly, controlled variables are the factors that should be kept constant or unchanged throughout the experiment. In your project, it would be important to control variables that could potentially interfere with the results or introduce confounding factors. For instance, controlling the environment, the participants' backgrounds, the timing of the experiment, and the characteristics of the lying stimulus would help limit any external influences on the results.

Remember, the specific variables you choose for your project may vary depending on your experimental design and research question. Therefore, it is important to clearly define and identify these variables before conducting your study.