Cannabis consumers are often caricatured as laidback, peace-loving folk, but a new study suggests that marijuana connoisseurs are actually prone to holding grudges.
The study focused on the fading-affect bias, which is a commonly experienced phenomenon where people tend to view the past through rose-colored glasses. People often remember the good times as great and the bad times as not-so-bad-after-all. But the fading-affect bias is less prominent in people who consume a lot of cannabis, according to recent research.
The study's lead author Daniel Pillersdorf - a graduate student in psychology at the University of Windsor - says that heavy cannabis users don't seem to part with the bad memories in the same way that people who don't smoke do.
"They were less able … to shed that unpleasantness associated with their memories," Pillersdorf told Live Science.
That tendency is also common among people with depression, who also show less fading-affect bias. The similarly means there could be a possible link between cannabis use and depression, though Pillersdorf says he doesn't know what the connection may be.
It's possible that depressed people tend to use cannabis more often, or that cannabis use contributes to developing depression.
In the meantime, make sure you don't bogart the joint at your next sesh because your fellow smokers aren't likely to let bygones be bygones.