It is understood as a longing for something long gone by, with a desire to relive the time, combined with a certain sadness while reminiscing about the particular life event.

The time of the past is remembered as an autobiographical memory of the self, something that the ...

Swiss physician Johannes Hofer referred to nostalgia as a kind of homesickness, a desire to return to the beautiful, simpler times.

The feelings of nostalgia were usually melancholia, anxiety, and rumination. It was made into a neurological illness, which...

• Nostalgia was considered by the early 20th century a psychiatric illness caused by some traumatic experience of childhood. It had three components, cognitive, affective and conative.
• The cognitive part remembered old memories of the self, while the affective part was a sa...

Having nostalgic thoughts about the past that one hasn’t directly experienced or lived through is called _Anemoia_.

The cognitive component of nostalgia is often a mental simulation, and may not have happened for real in the lifetime of the reminiscing person.

Sadness and depression are associated with the feeling of nostalgia, and recent studies show that nostalgia might even be caused by these negative emotions.

Loneliness, loss, a sense of meaninglessness, boredom and even coldness can trigger nostalgia.

• When the reminiscing person adds certain false memories and desirable traits to the past event, this creates a paradox and is attributed to an ancient Greek sophist and philosopher, Gorgias.
• A Platonic Paradox is when a person desires something and when it is finally attained, th...