Think of a song you used to listen to when you were in love or perhaps heartbroken. If you heard it now, it would probably bring
back old feelings. If the song became popular again and you started hearing it every day, you probably would no longer experience the same rush of feelings when you heard it. But if a month passed without your hearing the song at all, the next time you heard it, those old feelings would probably return.
<span>Young
infants cannot appreciate the carnival game in which a pea seems to
disappear from under a walnut because they have not yet developed a
sense of</span> "Object permanence".
