From my perspective living in rural Jamaica where "Respect" is given, expected and appreciated in return, it is just a Jamaican's way of showing you he is an equal and will treat you like an equal in your dealings with him or her. I have read opinions by Sociologists and alike that trace the expectation of "Respect" to Slavery in early Jamaica. Being owned and treated in a subservient manner; being called "lazy" and "shiftless" and not even be considered human was the breeding ground for the need to assert oneself and to gain self esteem.
Bands like "Third World" in songs like "Manners" explained it best to the masses with lyrics like.Show respect and some courtesy
You gotta give yours to receive
Manners , ain't nothing wrong with having manners
Show respect and some dignity
You gotta give yours to receive
People who have traveled to Jamaica for decades often say they are seeing the erosion of "Respect" as a fallout from crime and slack lyrics.
The co-opting of the term "Respect" by higglers and vendors to sell merchandise is much like "Rentas" co-opting Rastafarianism to move like wolves in sheep's clothing.
Respect is still a powerful force outside tourist traps where your word is your bond and your intentions are still judged by your actions. It is an erroneous exercise to judge Jamaicans using the yardstick of a Negril community heavily influenced by some "bad mind" outsiders who use the good will of Jamaican "Respect" to disguise their nefarious intentions.
Just my opinion.
Peace and Guidance