Deductive-nomological

The deductive-nomological model is a way for scientists to figure out how different things in the world are related to each other. It works like this - first, scientists observe things happening in the world. Then, they come up with a theory or idea about why those things are happening. They try to explain it in a way that makes sense and is logical.

Next, they use something called the 'deductive' part of this model. This means that they take the theory they have made and try to come up with certain predictions about what will happen in the future. For example, if they believe that all living things need oxygen to survive, they might predict that a plant kept without oxygen will die.

The 'nomological' part of the model is what helps link the theory to actual observations in the world. Scientists look at the predictions they made earlier and use observations and measurements to see if they are correct. If their predictions are correct, it can give them more confidence that the theory they made is correct too.

So, basically, the deductive-nomological model is a way for scientists to figure out why things happen in the world and how different things are related to each other. It involves making predictions based on a theory and then testing those predictions by observing what happens in the real world.