The Marketing Scales website is a gold mine of information. It is the only source that helps me understand the psychometric quality of the instruments used in past research. I recommend that researchers bookmark this site . . . they will be back!
Nostalgia
It is an eight-item, nine-point Likert-type scale measuring the degree of preference one has towards objects that were more common in the past. This measure has also been referred to as attitude toward the past (ATP) and as the Nostalgia Index.