Regarding the perception of time as we age, I recall some research which found that the perception of time on a short level is actually the same. In other words

Regarding the perception of time as we age, I recall some research which found that the perception of time on a short level is actually the same. In other words if you put a child and a senior into a room and give them an activity (or no activity) and ask them in regular intervals how much time has passed they both will estimate that similar time has passed. Supposedly, the reason that when looking back long term an older person things that e.g. the last year passed much faster is, that they remember more years, so the one year represents a smaller fraction of their memory. This is similar with forgetting things, older people are not more forgetful (provided there is no dementia...), but they know more things that they have forgotten.