marketing tactics

Some time ago I went to department store.
I found that clock isn’t there. I wonder why? afterward I know the reason.
If the clock were in department store people want to go out at the end time. Like this, department store use a kind of marketing tactics.
For example in the first floor rest room isn’t there. because people can come and go easily.
Also there isn’t windowpane in department store. because human are impatient when night comes. so when the most people see the dark, they hasten in order to go home.
Lastly a good seller is situated in the right side. because people turn to the right
unconsciously when they ascend and descend from escalator
Now, Do you know marketing tactics?