To turn your head either to the left or to the right (depending on which way you are going to go) , to make sure you check your blind and there is car is coming and there is no car is coming.
He is using the "Labeling" aspect of the categorization part of the perception process.
Labelling is portraying somebody or something in a word or short phrase.[1] For instance, depicting somebody who has infringed upon a law as a criminal. Labelling hypothesis is a hypothesis in human science which credits marking of individuals to control and distinguishing proof of degenerate conduct. It has been contended that labelling is fundamental for communication. However, the utilization of the term is frequently proposed to feature the way that the name is a depiction connected all things considered, as opposed to something characteristic for the named thing.
The answer would be : by comparing the DNA from the test using the Kastle-Meyer test. Kastle-Mayer test is used to detect possible presence of hemoglobin in the DNA. This results could be compared to the Law enforcement's database to find out the one's who is involved in the crime scene
